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- Date: 28 Jun 1980 0947-PDT (Saturday)
- From: Lauren at UCLA-SECURITY (Lauren Weinstein)
- To: FJW
- Re: CP/M info request
-
- AUTO BOOT and GO:
-
- If you have SID:
-
- Load an image of your OS (SID CPMnn.COM)
- Type "I"
- followed by the command line as you would like the CCP to execute
- it at startup. I.E.:
-
- ISTAT.COM
-
- Type M80,90,987
- ^C (reboot) and sysgen in normal manner to save new OS.
-
- If you don't have SID or want a command line longer than 16 chars:
-
- Load OS image using DDT (DDT CPMnn.COM)
- Patch the length of your command line into location 987H.
- Patch the ASCII of your command line into memory starting at
- location 988H. (you are supposed to follow this with the digital
- research copyright message to be legit).
- Boot and sysgen.
-
- --Lauren
-
-
- Date: 29 Jun 1980 2342-EDT
- From: CLEMENTS at BBNA
- To: FJW
- Re: CP/M info request
-
- In response to your message of 28 Jun 1980 0118-EDT
-
- I don't have my listing at home, but scanning it remotely, it appears
- you want a file called "$$$.SUB" on the disk from which you boot.
- It will be executed, and then deleted. So keep a copy under some
- other name too. Those are Dollarsigns, not ESC's.
- /Rcc
-
-
- Date: 06/30/80 03:03:47
- From: POURNE at MIT-MC
- Re: CP/M info request
-
- Just put the file name in the proper place as [part of the BIOS.
- Then call BDOS to execute the file.
-
-
- Date: 30 Jun 1980 1258-EDT
- From: CLEMENTS at BBNA
- To: FJW
- cc: CLEMENTS at BBNA
- Re: CP/M info request
-
- In response to your message of 30 Jun 1980 0029-EDT
-
- OK, I had forgotten the exact details of the SUBMIT stuff.
- If you could get it to work except for the delete of the $$$.SUB file,
- you can try removing the call at 2AD5, a CALL 29FC, which does
- the delete. (Replace with 3 NOP's obviously). Those addresses assume
- the CCP starts at 2900, and are for a 1.4 CPM. Alternately, a command
- in the SUB file might be to create a new SUB file before it finishes.
- Or to toggle between two SUB files, maybe. The FCB for "$$$.SUB" is
- at 3086, so you might have your program adjust the name field of that
- FCB to shift among SUB files and/or delete different ones at completion.
- Then if a clean $$$.SUB is left, a re-boot would work. Good luck.
- /Rcc
-
-
- Date: 07/02/80 13:19:06
- From: LEO at MIT-ML
- To: FJW
-
- On North * CP/M (the stuff written by Lifeboat) there is just
- a byte that has to be patched to tell CP/M to run "AUTO.COM"
- on either warm or cold boot. If you are not running one of the
- packaged versions it is just a quick cbios hack. I also have
- a north star and a tarball system.
- Leo
-
-
- Date: 07/02/80 13:33:19
- From: LEO at MIT-ML
- To: FJW
- Re: CP/M info request
-
-
- Continued from last message:
- If you are into hacking the CBIOS (I assume that you have the
- source) all you have to do is the following (let us assume that
- 'CONIN' is the lable used for the routine to get characters from the
- console.
-
- Patch this into the routine that is run before jumping to the CCP:
- lhld conin+1 ;save old address
- shld oldaddr
- lxi h,frotz ;the address of the new routine
- shld conin+1
- ;continue with the code and jump to the CCP
- .
- .
- .
- jmp ccp
- oldaddr ds 2 ;a place to save the old addr
- chrcnt db 0 ;a count of the characters sent
- command db 'The command line',0
- frotz lxi h,command
- lda chrcnt
- mvi b,0
- mov c,a
- inr a ;increment character count
- sta chrcnt
- dad b
- mov a,m
- ora a
- rnz ;with character in A
- xra a
- sta chrcnt ;reset in case we want this again
- lhld oldaddr
- shld conin+1 ;un patch the routine
- mvi a,0dH ;set the CCP a C/R
- ret
-
- That should do it.
- Leo
-
- *** EOOH ***
- Date: 07/03/80 01:21:59
- From: LEO at MIT-ML
- To: FJW
-
- The MODE byte is located at 23FF Hex in the sysgen position (assuming
- CP/M 1.4.
- The following bits seem to have the meaning (one is un-documented
- and is easily found; I did it once and forgot)
- Numbering the bits from 0..7
-
- Run Auto after cold boot (the bit position is not given)
- Run Auto after warm boot (Bit 1 (set with an OR 2))
- Enable interupts after disk access (Bit 4)
- Read after write (bit 6)
-
- Leo
-
-
- Date: 4 July 1980 00:53-EDT
- From: Frank J. Wancho <FJW at MIT-MC>
- To: INFO-MICRO at MIT-AI
- cc: FJW
- Re: N* CP/M AUTO Start
-
- My thanks to those who responded to my plea for help:
- LAUREN@UCLA-SECURITY, CLEMENTS@BBNA, POURNE@MC, and especially to
- LEO@ML. The replies are in MC:FJW;CP/M AUTO.
-
- The final solution, courtesy of LEO (and also from LifeBoat, who
- neglected to send along a set of notes for their version which I just
- received today):
-
- For N* CP/M version 1.4 and up from LifeBoat there is a MODE byte at
- SYSGEN location 23FFH which is defaultly set to 10H. The values of
- the bits are, when set:
-
- 0 - n/a
- 1 - Run AUTO.COM after cold start (default: OFF)
- 2 - Run AUTO.COM after warm start (default: OFF)
- 3 - n/a
- 4 - n/a
- 5 - Enable Interrupts after disc access (default: ON)
- 6 - n/a
- 7 - Do read after write to disc (default: OFF)
-
- To turn on all effective bits (53H):
-
- MOVCPM * *
- SAVE 36 CPMxx.COM
- DDT CPMxx.COM
- S23FF
- 53
- .
- ^C
- SYSGEN
-
- A
- (reset)
- SAVEUSER
-
- Then REN whatever you want to run as AUTO.COM and there you have it!
-
- --Frank
-
-
- Date: 26 July 1980 00:56-EDT
- From: "James Lewis Bean, Jr." <BEAN at MIT-MC>
- To: INFO-MICRO
- Re: CP/M auto Start
-
- I use two different methods for auto-Starting CP/m's.
-
- The first of these methods is to use the SUBMIT command. If
- you wanted to have your system execute the command `AUTO' you
- create a file, the name doesn't matter but for this example
- call it `START.SUB', with the following instructions in it.
- AUTO
- SUBMIT START
- and type SUBMIT START. Now until you stop the submit program,
- by typing a charecter while it is loading a new command, the
- CP/M will read from the SUB file.
-
- The second method is more complicated and impossible to stop.
- If inplace of the DRC copyright notice you place a command name
- and replace the 0ffh before the copyright notice to a 0 that
- command will be executed on each warm boot. To get this to
- happen you must get a copy of your CP/M into ram. Then you
- will find the Copyright notice starting at 701h and the 0ffh is
- at 700h. Once this is finished you must sysgen this system off
- to disk. Good luck.
-
-
-
- Bean at Mit-Mc
- James Lewis Bean, Jr
-