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*** Master Cache V2.76 *** Copyright (c) 1992,1993 Made by: Daniel Carl Gouthro Created at October 12,1992 Updated at March 15,1993 It is best disk caching system for ATARI ST,Mega ST,STe,Mega STe and TT computer! It support any logical size up to 8192 bytes per sector, write delay caching,TOS buffers configuration for TOS V1.4 or higher, FAT/DIR priority option,many other features you can't refuse to accept this program!!! It is DEMO version of Master Cache V2.76 that can be upgraded to full registered version by enter the password. See end of text about how to register this copy. BONUS: Master Cache V2.76 just like ICD will WORK on TT computer,too! NOTE: Write delay cache will NOT report any errors most of the time. Because of it,you should not cache these floppy disks if they are write protected. These disks allow you to update files or directory but will not be written to the disk. If you like to cache the disks,you must not write protect the disks!!! But however it will report any errors if you disable write delay cache flag. Installing your Master cache program You can install Master cache program on boot floppy disk or hard disk where you like to install. You must place the program CACHE.PRG into AUTO folder then re-boot the computer. It will install by itself and start to cache the disk(s) which is being cached. You can see the information during booting the computer. Configurating your Master cache program It is MOST advanced features you will take advangtes is configuring your Master cache program. It is called CACHECFG.TOS. It also include password upgrade module in it. You can put CACHECFG.TOS into any folder but must be reside on same disk as CACHE.PRG is. However,if you have hard disk,you can put CACHECFG.PRG on any partitions,even not in C: at all. When you run this program,it will ask you to choose floppy disk or hard disk to configure for. Press A or C to continue. If you receive opening the file error,don't despair! It mean you do not have configuration file called DANCACHE.DAT file. It will automatically select default configuration and make new serial number by itself. It will put you into DEMO mode. Remember to save configuration file immediately if you get new serial number. Main menu has many commands you will LOVE to! Choose any letters you like. Change drives to be cached - This will configure which drives to be cached. If you press A,it will toggle drive A: cache flag. If you re-boot and these drive which is not flagged will be bypassed and goes normally to the disk without cached. If these drives is flagged,it will be cached. Password - This will let you enter the password to upgrade to full version. See end of text for more detail(s). Save configuration - This will save configuration file to selected drive you chosen at beginning of the program. It will also save validated full version module to same drive. Quit - This will quit the program. It will ask you if you like to save configuration file before quitting. Change cache block and sector size - This will allow you to configure cache size. Cache block is number of cache blocks, each block hold number of sectors which is cached. You can enter number of cache block from 1 to 1024. Sector blocks is sector size per cache block. You can enter number of sectors per cache block from 1 to 128. If you select 1 on sectors,each sector the disk read will be cached if possible. Performance will be affected by this option. You can experiment with these to find best performance. Change maximum number of sectors to be cached - This will allow you to change maximum sectors to be cached. If disk read or write exceed this maximum sectors length then the cache system will be bypassed for this operation. Most time,you should enter 150% of sector block into this number to give best performance. If you have 8 sectors per cache block then you enter 12 on this number. If you have floppy disk,you can enter 4 times of sector block on this number to speed up disk operation. There is no obligation to enter any number other than recommanded,you can reduce the performance if you set too small or too much. Change TOS buffers - This will allow you to change TOS buffers upon booting the computer. It is only useful for TOS V1.4 or higher owners! TOS V1.0 and V1.2 users can change any number higher than 0 but it simply allocate the memory and allocated memory is lost (wasted!). TOS V1.4 or higher owners can set data buffers or FAT/DIR buffers any number from 0 to 255. 0 will disable each buffers. TOS V1.0 and V1.2 users should always set both buffers to 0. This feature allow TOS V1.4 or higher users can remove CACHEXXX.PRG provided by ATARI Corp. Change write delay time - This will allow you to adjust time it will take before write to the disk will occur. It is useful only if write caching is enabled. You can set from 0.5 to 99.9 seconds. You should wait after last operation for seconds depend you configured before it will be written into the disk before you remove the disk from the drive. Removing the disk before it is written could damage the disk! Change maximum logical size - This will let you change maximum logical size. The sub-menu appear and you will select number that match bytes per sector you want. If you have 512 bytes per sector,you select 9. Any partition that exceed maximum logical size will not be cached. NOTE: If you have set up TOS buffers,you must select maximum logical sector to match largest logical size on any partition you have. Change cache flags - This is most important you will use. Write delay cache flag is the switch that you will "cache" write operations. If you enable this,all write operation will be cached and the timer will automatically be activated when you re-boot the computer. If there is write pending flagged on cache block then it will be written on the disk after the time expire. NOTE: Write delay cache will not report any errors from any disk! FAT/DIR priority flag is the switch that FAT/DIR will more likely to be cached more than the data. If you disable this,FAT/DIR will be treated as the data. If you enable this,FAT/DIR will be cached as maximum priority. If you enable this as "SUPER",FAT/DIR will be cached as one level higher than maximum priority and will less likely to be flushed when all data is at maximum priority and no more cache block left for new sector to be read. If you enable this as "LOCKED",FAT/DIR will be cached and can't be flushed unless all cache blocks have FAT/DIR. You must set FAT/DIR priority flag to be NORMAL ENABLED if you want best performance on TOS V1.0 and V1.2. You do not need this if you have TOS V1.4 or higher but you can enable this if you like higher performance. Change maximum priority list - This will let you change maximum number of priority list. If you set to 4 then there will be 4 priority lists each cache block. If you set to 8 then there will be 8 priority lists each cache block. More priority list will give any sector which bearing highest priority will stay in the cache for much longer time. Best performance is about 4 to 8. Change cache age delay time length - This will let you adjust cache age delay time length. This is most important for the people who switch from big application to another application which involve big disk activity such Lattice C V5.5,Style V1.1 load/save many pictures,many other program(s). When the time expire on age delay time you specified,it will cause lower all older cache block's priority so allow new recent data will be loaded into older cache block and flush older data. Next time,you access recent data,it will be read from the cache likely. It is most useful when all cache blocks are filled up with old high priority data from same disk. It will allow you to set from 3.0 to 499.9 seconds. You can enter 0 to disable this feature. NOTE: This feature will NOT lower FAT/DIR priority if you set FAT/DIR priority to SUPER or LOCKED. NEW! Version 2.76 feature - media change check - This will let you enable or disable media change. Default is ENABLED. If it is enabled, when media change occur (disk is changed or disk tool forced media change) then all cache blocks are flushed and invalidated except any block that are still write pending. Write pending block will still be written only if media change occur and you do not change the disk. You must ENABLE media change check if you cache floppy disk or removeable hard disk. This will prevent damages to the disk that are changed. You can disable this only if you cache fixed hard disk. It will cache more sectors but will not check if the disk is changed. Use with extreme caution if you disable media change check. I am strongly recommand you to wait for seconds you specified for all write pending operation will be written to the disk before you change the disk or use disk tool such disk editor or disk optimizer. NEW! Version 2.76 feature - precaching - This will let you to configurate pre-cache features. There are two settings you can edit. Pre-caching blocks is number of blocks the cache will pre-cache from selected drives when cache program (AUTO folder) is run. Setting this blocks to 0 to disable pre-caching. Pre-caching drive is the drive you want to pre-cache. You can pre-cache only ONE drive at a time. You can choose A to P for this. If you select C: as pre-caching,it will speed up AUTO programs AFTER cache program is run. It is useful for older TOS users (pre-TOS V1.4). You should not set pre-caching blocks exceeding number of cache blocks you defined or it will simply slow down processing and flush older data from the cache. Change the switch during the session This option in configuration program let you change your cache switches during cache is in progess. If you try to access it by press 'O' and the cache is not installed,the error message will appear. You must have the cache installed before you can use this option. The cookie is used by Master Cache V2.76. It is called 'CACH' cookie name. It bears base address that configuration program can modify internally in the memory. This option also give you brief information about cache statastic(s). Change write cache flag and FAT/DIR priority flags are same effect as above except it will take effect immediately. NEW! Media change check flag are same effect as above except toggle media check immediately. Change drives to be cached does same thing as above except this will toggle drive to be cached immediately instead of re-booting. It also flush any cached blocks that match drive letter you toggled. Change age delay time length does same thing as above except this feeling will take effect immediately. The statistic will give you useful information about the cache performance. These statistic will be displayed right when you access this area. Read Block is number of read blocks TOS access to the disk. Read Cached is number of read blocks which already in the cache. % Performance is how the cache performance "feeling". Write Cache is same statistic as above. Write Cached is writing the block is already in the cached and will be written as soon as the timer expired (the time taken after last operation of accessing the disks). NOTE: It is also counted even if write delay cache is DISABLED,it mean it will cache these blocks at next read access. It is called write through cache unless write delay cache is enabled. NOTE: Read block and Write block will not be counted if the disk access exceed maximum sectors length to be cached. There is an option to view more detailed information about the cache. Press X to get detailed information on EACH cache block! It will give you each cache block about drive number,starting sector number,priority and write pending. If there are more than 16 cache blocks,you can press any key to continue to next page of detailed cache information. Registering Master Cache program DEMO version of Master Cache will allow you to cache the disk at very limited performance. You are limited to 8K cache block(s) or so. You are not allowed to use any other features such TOS buffers,write caching, FAT/DIR priority,etc... However,you are allowed to use drives to be cached can be configured (Toggle the drives to be cached). If you like to register this copy,send me $15 registration fee and wait for the password to arrive. You can send the cheque or money order. Do NOT send the cash! The cash is easily be stolen in the mail. Sending the cheques or money order ($15) to me along with your serial number to: Mr. Daniel Carl Gouthro 42 Pinson Private Ottawa,Ontario (CANADA) K1V 0E6 Be sure,you must give me your name and your address or I can't able to give your password! You must also send me your serial number,too! After you sent your cheque or money order for the password,DO NOT DELETE DANCACHE.DAT file!!! It contain valuable serial number in it and it is valid only for the password you get. The password will WORK only with the serial number in DANCACHE.DAT which you sent me serial number. After you got the password and registered it,you will enjoy FULL benefits of Master Cache program - BEST disk caching system for ATARI ST computer!!! Last minute update to this document: Master Cache V2.76 are fully support media change recgonize and will automatically re-read from the disk after the disk is changed. NOTE: You MUST not cache floppy disks if you are backing up with diamond program,toolkit program or disk editing such DLII or other disk editor. These programs bypass operating system and directly to the disks. But you can cache hard disk since they must use operating system to order to access hard disk. It will force your master cache to flush the cache. You can cache ICD hard disk with Master Cache V2.76,even if ICD caching is enabled. However,I am strongly recommand you disable both ICD read cache and write cache. However,you can keep write verify enabled since Master Cache V2.76 do not have write verify feature. Enabling cache on BOTH ICD and Master Cache V2.76 will take much more memory than needed! You can choose ICD or Master Cache if you wish to. You need Master Cache program if you have any hard disk other than ICD (SCSI) and you do not have ICD host adapter. You can still use FOLDRXXX.PRG to expand the folder since Master Cache V2.76 do not have folder expander because there is no documented system variable for the folder. There are documented system variable for cache and TOS buffers only. I will try to collect undocumented system variable for expanding folder and I hope I will include it in future versions. I found there is a problem in priority system before releasing Master Cache V1.0! I have installed new "aging" priority system right into it. It will ensure old high priority data will be flushed and fetch recent data from the disk to that cache block depend age delay time specified by you. *** Master Cache V2.0 Upgrade *** I have upgraded Master Cache Version 1.0 to 2.0. It is finally now support ALL partitons and can exceed 32767 sectors up to 65535 sectors - useful for TOS V1.4 users. Note: It will work only on TOS or BIOS based partitions only. Most hard disk users have TOS partition like me so it will work. There is an execption - Master Cache V2.0 can cache up to 512Mb per partition if you are using larger logical sector size such 1024,2048,4096 or 8192 bytes per one logical sector size. NOTE: Setting logical sector size to bigger than 512 bytes will ALLOCATE more memory for each cache block according to required number of sectors per cache block multiplied by one logical sector size. One thumb rule, you can calculate how much memory the cache will allocate is number of cache blocks X sectors per cache block X logical sector size. It also have impact on TOS buffers memory allocation as well. You should see total memory allocated will be displayed on main menu or display status on your Master Cache configuration program. New feature is faster caching search and media change check switch. You can disable media change check if you use fixed hard disk. See configuring your cache about the caution on media change check flag. Cache age delay time range is now extended to 499.9 seconds. You can now set anywhere from 3.0 seconds to 499.9 seconds instead from 3.0 seconds to 99.9 seconds. There is some changes into detailed information about cache blocks. Now this program will report "DIRTY/INVALIDATED/UNUSED" if each cache block is dirty or invalidated or not used yet. Also not only new feature about media change check,it will now stronger checking media change than Version 1.0. This will happen only if media change check flag is enabled. Version 1.0 have a minor bug sometimes confusing cache block if media change is called by disk tool or disk editor or other such program modifty the disk(s). *** Master Cache V2.01 Upgrade *** The vocubulary bug caused annoying the people who change maximum logical sector size. It says "9 - 512 sectors" that should be "9 - 512 bytes". This is something I mistyped or mis-spelling. It has been corrected now. There are many minor bugs on every input! When you enter invalid entry,it will print "INVALID ENTRY" and immediately clear the screen without key press! It has been corrected and will now wait for a key to press before clearing the screen. There is "rarely" moderate bug that cause sometimes to make other programs weird or modify GEMDOS randomly or even rarely crash the system when you toggle the drives to be cached when the cache is installed. Also it will NOT flush the cache that should to when you toggle the drives. It has been fixed and now will flush the cache correctly and willn't modify any other area randomly. I forgot to save base pointer for configuration program when the configuration "communicating" with internal cache module for updating the cache when you toggle the drives to be cached. Internal cache module (where it is resident in memory) have own intependent base pointer. There is another bug on toggle the drives to be cached during the session. It did not inform master cache there is media change request when you enable the cache. It will prevent master cache from checking maximum logical sector size on the disk to see if the disk exceed maximum logical sector size. It will lead the system to crash when you try to access the disk which is "accidentally cached". Master Cache V2.01 should not cache any disks that are exceeded maximum logical sector size. I have tested the cache on TT and many time the system crash due to hard disk's logical size is 1024 bytes instead of 512 bytes and someone else formatted hard disk to 1024 bytes per sector and did not inform me and TT do not have any hard disk tools to display the statistics! I used this on TT at Chiang Computer store. It has been fixed. It only applies to toggle the drives to be cached when the cache is INSTALLED. Older master cache V2.0 can still cache hard disk which is non-standard but you must set logical size to largest logical sector size of any partition you have BEFORE installing the cache. I as the author have many latest disk tools to view hidden statistics on hard disk to find logical sector size,much more information. There is two minor changes to media change check module. The cache will no longer cache any drive access when GEMDOS request to read/write sector 0. Also it cannot cache any drives that "maybe or might" to be changed even if media change check flag is disabled. It will protect the disk from the damages when media change check is not possible. If you inserted same disk with no write protect,first disk access will not be cached so GEMDOS can able to check the disk then subseqent access will be cached thereafter. There is one minor changes to disk write module. It will not longer to write entire cache block if disk access is already in the cache and sectors you required to write is less than sectors per cache block. It will further speed the disk writing. It is only happens if write delay caching is disabled and portion of the sectors are already in a cache. *** Master Cache V2.5 Upgrade *** There is a major upgrade on Master Cache program! There is no new features to you but however there is major improvment(s). This Version 2.5 will run 33% to 50% faster than V2.0 just like ICD does. I have tested speed of my cache and found it is exactly same. I am done that by optimizing the code(s) on many area(s) and made new structure of cache parimeter block instead of regular cache block(s) along with the header(s). I also re-write block-move instructions to use register based move instead of regular block moves. It result super fast block/binary move! Most codes are re-written to handle structure of cache parimeter blocks to keep searching for target block fastest possible. Program size is also reduced due to fewer code needed to locate cache blocks by structure and new super fast block move code. Cache parimeter block is most advanced variable/structure ever I have. Master Cache V2.01 is not released due to new improvement done to Master Cache V2.5. However Master Cache V2.5 include Master Cache V2.01's bug fixes. Master Cache Configuration program is modified by me to handle correct information provided by cache parimeter block structure. Older Master Cache Configuration can run but you cannot access to statistic display about cache activity because it will result in system crash if you try to display detailed statistic about cache activity. Please use newer version of Master Cache Configuration program. *** Master Cache V2.51 Upgrade *** Sorry,there is one tricky bug that effective prevent Master Cache from check maximum logical size if you enable the cache,the disk is not changed and the disk exceeded maximum logical sector size the cache can handle. This bug "miss" media-change externally. I fixed one serious bug before in Version 2.0, now there is one another - different bug! I am finally fixed secondary bug! I am re-writting which the cache will locate. Previous,the cache program always test the cache from beginning of the table. Now the cache will test the table from the location where it is previously used. It further speed the cache up by 5 to 10 percent. *** Master Cache V2.53 Upgrade *** There is one bug in Version 2.51 is write pending cache bug. It has been fixed. Some program read lots of sectors at a time and bypass the cache due to exceeding maximum number of the sectors to be cached and did not read any new data from the cache which is write pending and not written to the disk. It result read lots of the sectors from the disk bypass the cache will be older data than the cache has. It can corrupt the data. You can avoid this by wait for the disk to be written before load or read LOTS of sectors at a time. It only applies to earlier version of Master Cache and are fixed in Master Cache V2.53. Now you do not have to wait for the disk to be written before read lots of the sectors at a time. There is new one minor improvment to TOS buffers allocation. It will now allocate old existed TOS buffers as additional benefits if old TOS buffers are already allocated by TOS or any previous program in AUTO before this program is run. It will give you EXTRA TOS buffers rather than total of TOS buffers you defined to. If you configure as 16 TOS buffers for Master Cache 2.53,it will be treated as 16 EXTRA TOS buffers instead of total of TOS buffers so it may have 24 TOS buffers if TOS already allocated 8 TOS buffers BEFORE Master cache program is run. It also ensure not wasting old TOS buffers memory from the computer!!! *** Master Cache V2.54 Upgrade *** Improvement made to write pending cache flush module during read lots of sectors at a time. It will flush only write-pending cache which is "conflicting" with reading lots of sectors which bypassing write pending cache. All other write-pending cache which is not read by GEMDOS during read lots of sector at a time will NOT be flushed anymore and will be written normally by write-delay timer. Flushing write pending cache will be forced to write to the disk BEFORE read lots of sectors operation will take place. Most common is speed up FATs sector writing operation while reading lots of sectors at a time after write any data to the disk by some programs which modify the program(s) such DC Squish, etc... It has very effect on disk optimizing or compressing the directory. *** Master Cache V2.55 Upgrade *** Oops! There is minor bug in odd-address move inside internal cache in my Master Cache V2.54. It jumped into internal module without calling external odd-move module to setup properly internal variable. It causes odd-address move module to be mixed up and causes infinite moving memory. This will overlapping all memory and crash the system. TouchUp V1.65,I think reading from hard disk into the memory at odd address. This bug has been fixed. *** Master Cache V2.56 Upgrade *** What?! I changed the way of write pending cache module. This cache is always write pending even if the sector is not in cache. It will automatically "read" from the disk if the sector is not in cache and will set write pending flag on that sector - always. It will allow repeat same sector to be written will be cached second time. Writing to the disk without cached is little slower but however it will cache non-cached writing sectors next time you tried to write again. It is known as combination of read fetching cache and write delay cache! All sectors written will be write delayed if write delay cache flag is enabled instead of some sectors. Be sure to wait for how much seconds you defiend before SHUT DOWN the computer unless you disable write delay caching flag. There is a bug in DEMO mode in Cache Configuration program. It do not allow you to change maximum logical sector size to any larger than 512 bytes per sector. This is too restrictive for anyone who have bigger logical sector size and will not get any cache performance! It has been fixed. You are now allowed to change maximum logical sector size in DEMO mode. There is a bug in write cache,it is causing stale data if you write large file that larger than maximum sector to be cached and bypass the cache will be written but not update read/write cache! It has been fixed. New version will now update the cache memory properly when some program write LOTS of sectors to the disk - especially data diet program(s). *** Master Cache V2.70 Upgrade *** There is some modifications to existing code just make little more effective for lots of sectors at time. There is no bug fixes. I removed Master Cache V3.01 due to problem with many bugs and I am unable to track any hidden bugs. I am still working with Master Cache V3.01 but I have to delay because I may get taxation job at a time. One new feature for Master Cache V2.70 is allow you to reset cache performance statistics by press 0 during session configuration. Security checks in configuration program for hackers is now tighted. *** Master Cache V2.71 Upgrade *** Sorry! It is one last minute bug in Master Cache V2.70 that are very rare and only happens if any programs who write lots of sectors at one time and read back same sectors at same time. Also data diet program write temporary file out and read back with sector by sector to de- compressing. This bug in Master Cache V2.70 cause big problems with these programs! It has been fixed. *** Master Cache V2.72 Upgrade *** Sorry,again! It is programming error on Master Cache V2.71. It is not a bug but will cause the cache to lock up when some program try to write lots of sectors more than maximum sectors can be cached. It is only programming error,not a bug. Master Cache V2.72 corrected this error. All users must use Master Cache V2.72 instead of V2.70 and V2.71. I am admitting Master Cache V2.72 is a bug free. Data Diet program is biggest victim of a bug and programming error in Master Cache program prior to V2.72. *** Master Cache V2.75 Upgrade *** One new small feature added into Master Cache V2.75 called precaching! It allow you to precache FAT and root DIR from A: or C: or other drives before the cache AUTO program is completed allowing speed up remaining AUTO programs after that. You can configure it with how many blocks the cache will pre-cache and the drive you want to pre-cache. Setting precaching blocks to 0 to disable pre-caching. You must use new config program to implement this and will support older DANCACHE.DAT file but set pre-caching settings to default value if load older DANCACHE.DAT file. It is useful for older TOS users (pre-TOS V1.4). You should not set pre-cache blocks to exceed number of cache blocks you defined or it will simply slow down processing and flush older data from the cache. Another changes to logical sector size configuration. Now you can intependently configure two seperate logical sector size - each for the cache and each for TOS buffers instead of one logical sector size that previously applied to both. It allow you to select smaller logical sector size for the cache and select large logical sector size for TOS buffer to save some memory. NOTE: Any partition exceed maximum logical sector size for the cache,the cache will be bypassed for this operation but TOS buffer will NOT be bypassed so you must select maximum logical sector size for TOS buffer to be largest of any logical partition you have to avoid system crash. This caution only applies to TOS buffers,not the cache. Internal caching has fully automatic checking logical sector size on each drive. NOTE: If you install the cache with old DANCACHE.DAT file, TOS buffer will automatically set to 512 bytes per sector. If you have larger BGM partitions,you must run configuration program FIRST,modify TOS buffer logical sector size and save to the disk BEFORE install the cache. *** Master Cache V2.76 Upgrade *** This is minor bug fix on processor's stack. Earlier version did corrupt main code during hard disk driver is called but will not disrupt hard disk operation unless hard disk driver filled up more than 256 bytes on stack then terrible things will occur and damage your files on hard disk. Only few programs are victim of this condition. This bug has been fixed and now handle stack frame correctly. It has allocated 1024 bytes for stack use but earlier version did not use it that it should be used. *** NOTICE! NOTICE! NOTICE! *** I am not responsible for any damages done to any floppy disks or hard disks or other drives as result of use,misuse or abuse of this program. I will not be liable for any damages you caused with this program. This program is a copyrighted and you can give away to any people or upload to BBS if you like but you MUST not sell this program. You are *NOT* allowed to give away or upload your program if your program is a registered version. If you plan to give away,you can do by give everything away except DANCACHE.DAT file. You must keep DANCACHE.DAT file strictly personal. Your password is also strictly confidential! I have extensive tested my Master Cache V2.76 and found it worked perfectly on all hard disks without any one gitches! You can try Master Cache and you will find no gitches at all. However it is ABSOLUTELY no warranty of this Master Cache program. I am working on COMMERCIAL version of Master Cache and will release soon. I did not get an application from New Deminision company yet. There is lists of features for COMMERCIAL version not in shareware version. o Write verify operation with adjustable verify buffer o Write protect on any drives you define o GEM configuration program o Messages on top right of the screen (switchable) o Possibly communicate with ICD hard disk driver o Printed manual with reference Made by: Daniel Carl Gouthro I am Master programming in C (Natural Master Level 45). I am near Doctor programming in C and assembly language. I am currently wearing big blue-black-blue hood and it are getting bigger and bigger.... and change color toward the purple slowly! Natural Master levels is far more than mountain master but less than doctor level. Doctor level's hood is Biggest pink-purple-pink hood with the silk. (D.C.S.!)