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the same disk device such as the HD. The problem you will have is that GEOS will be controlling the HD from one computer and attempting to control it from another one also. The code for controlling the drive is not entirely contained within the drive like it would be if you were outside of GEOS. Part of the DOS code is in the computer. You would certainly be trashing your HD quite frequently I am afraid. Just consider yourself the king of the household. The one with the HD. Everyone else can look up to you. -Maurice ------------ Category 4, Topic 12 Message 26 Wed May 31, 1995 C128.JBEE (Forwarded) > W.WILEY2 > I, for one, would be interested in a multiplexer for my system. A long time ago I bought a serial cable switch box and an eighteen foot serial cable from a place called VSI that use to advertise in RUN Magazine. I used t to switch my CMD HD between two computer systems. It is not the same as owning a multiplexor but it is good enough for anything that is not for BBS usage. ------------ Category 4, Topic 12 Message 27 Sun Jun 11, 1995 W.WILEY2 (Forwarded) JBee- you are EVERYWHERE I want to be! It weems when I've got a question, you've already been there and browsed around for awhile. (oops, I meant 'seems' instead of 'weems') It sounds like a novel idea I may have to tinker with! I've got too many ideas bopping round my head- books,s/w , soldering projects, yada yada yada Godd to have such wealth of info out here. ------------ 4 ? ************ Topic 15 Sun Apr 23, 1995 R.DAY (Forwarded) Sub: 1541 dos vershions. There are some 1541 ROM's that skip. The text next asks about them. 16 message(s) total. ************ ------------ Category 4, Topic 15 Message 1 Sun Apr 23, 1995 R.DAY (Forwarded) I asked about 1541 DOS ROM vershions about 3 times before going back years. I never got a good answer. But I just noticed from reading a text file called Bowen Comments that there was a 251968-02 ROM for the 1541B/C. I never seen a drive with this ROM. I even made a program and uploaded it to Q-link and I think to here too that will tell you if you have 1541 DOS, 901229-01, 901229-03, 901229-05, 251968-01, 251968-03, or Jiffy DOS. I asked any one if the program came back with out telling what DOS you have to please let me know. I just wanted to know if commodore ever put out DOS 901229-02, or 901229-04, or 251968-02. But now I guess the 251968-02 is in a 1541B/C drive. I got a 1541-II that has 251968-03 in it and says on the bottom of it, "c 1987 CBM IC ROM 251968-03 c 1981, 1983 CBM IC ROM 325302-01 IC ROM 901229-05 as contained herein." So does any one know what the last 2 DOS vershions are? Maybe (or should I say perhaps to sound smarter?) CMD would be the best to tell what they are because from other post I posted no one knows. ------------ Category 4, Topic 15 Message 2 Tue Apr 25, 1995 R.DAY (Forwarded) I will tell what I know about how the 1541 drive ROM's are different. 901229-01 I guess was the frist 1541 DOS. It had a auto utility loader in it. If on power up the data and clock lines are grounded it looks for a & file. If you have a CMD FD drive terned on at power up it will set a 1541 with this ROM to auto boot a & file. I guess CMD did not even know this. Who ever has this old rom any ways? I think it was the old one with a little lighter color then a 128. Said VIC-1541 on it, Single drive floppy disk. It had four 2114 ram chips in it to get it's 2K ram. 901229-03 I don't know I guess they fixed some bugs. The code was left out for a power up auto & file loader. 901229-05 I guess they fixed some more bugs and this is the DOS I think is in most of the old style 1541 drives. 251968-01 They put this in a drive the same color as a 128. It was the same style as the old 1541's. It had a track 0 censor and the ROM checked for it. But you had to cut jumper three so it would work. This drive when you tern it on will bump the drive head enless you cut jumper three. 251968-02 This I only got info from a file called "bowen comments" I don't know what the drive looks like but they called it a 1541B or 1541C. The interrupt rate was changed back to 15ms, TRKNUM is over 35, Save-@ fixed, device not present fixed, sets decimal mode before disabling IRQ, and frist one to have copyright test at the frist page. I never seen a drive with this rom. 251968-03 This one they put in a 1541-II. The track 0 censer was out of the drive and the code for it out of the ROM. They did ground the pin on the CIA that test for track 0. Does any one know why commodore would take out the track 0 censor and even when they did have it you had to cut a juper? 325302-01 I guess this is a ROM for a 1541-II but I never seen it. I only seen it printed on the bottom of a 1541-II, saying that the drive my have it. But this drive had the 251968-03 rom. Does any one else know any more? Or does any one know how to get a hold of the person named Bowen, who wrote bowen comments text? ------------ Category 4, Topic 15 Message 3 Wed Apr 26, 1995 H.HERMAN1 (Forwarded) Richard, The Bowen you refer to is Fred Bowen, a former engineer at Commodore. Thinking about it, all engineers at Commodore are former.... Fred was one of the 3 prime designers of the C128, and one of its biggest supporters, providing upgraded Commodore software and hardware. Howie ------------ Category 4, Topic 15 Message 4 Wed Apr 26, 1995 R.DAY (Forwarded) I found a little more info on the 1541 DOS. From looking at the book called Inside Commodore DOS. I guess 901229-01 had some error with a speed-up in the serial bus listen routine. Bytes $EA0E to EA17 are not the same and in the book it says three nop bytes to fill space left by speed-up to fix VC20 901229-02 ROM's. So there must of been a 901229-02 ROM. Then in 901229-03 I think they just changed the header gap at $F58D and $FCD0. don't know if there was ever a 901229-04 ROM but some time in early 1984 Commodore was shipping a new 1541 901229-05 rom. It fixed stack overflow problems, did not have the utility loader to fix initialization problems, changed the initialization of the serial bus, change the initialization during power-up, and a patch to the serial bus listen routine. The book Inside Commodore DOS looks like it's 901229-03 DOS but the check sum byte in the book at $FEE6 is #$FD and this is 901229-01 DOS. 901229-03 has a #$0E here and 901229-05 has a #$3E here. Does any one know Fred Bowen's internet address? ------------ Category 4, Topic 15 Message 5 Thu Apr 27, 1995 B.GANN1 [Brenda] (Forwarded) RD>901229-01... Who ever has this old rom any ways? I think it was the old one with a little lighter color then a 128. Said VIC-1541 on it, Single drive floppy disk. I have this drive. Do you need a test done on it or something? Brenda ------------ Category 4, Topic 15 Message 6 Thu Apr 27, 1995 GEOS-TIM (Forwarded) Ray, Since Fred Bowen's name has come up so much in the last few days,I have scheduled him for a conference on May 23rd. The starting time will be announced at a later date. I'm sure Fred will be more than happy to answer questions. He may be lurking around during that week too, so be sure to post questions. :) -Tim ------------ Category 4, Topic 15 Message 7 Sat Apr 29, 1995 R.DAY (Forwarded) There use to be a 1540 drive. I guess it was the drive for the VIC-20. It must of cost about $600 because when the 1541 frist came out it was about $600. The 1540 did not work on the 64 because it was to fast. The VIC-II made the 64 slower then the VIC-20. You can test this out by giving any 1541 a UI- then it will just speen. But it would work on a VIC-20 or in 128 fast mode or terning off the VIC-II chip with a poke53265, peek(53265)and239. I never seen a 1540. I guess if any one had one Commodore did a upgrade to the ROM. What I wanted to know is what was the 1540 ROM vershion? was it 901229 with out a - or something? ------------ Category 4, Topic 15 Message 8 Sat Apr 29, 1995 R.DAY (Forwarded) I just uploaded a program called "see dos version" it is file # 17049. If you run this and get "1541b with update vershion 251968-02", please let me know. Or if you run it on a 1541 and it says "unrecognized drive", please let me know. This program was from Fred Bowen and I added some things to it. Maybe I could even have it see what vershion of CMD drive you have. But that would take a lot of people testing. After the program when it say unrecognized drive on a CMD drive you type: ?a,b,c,d it will come back with 4 numbers. On my CMD-200 HD the numbers were 63,208,222,82. On my CMD-20 HD it was 5,80,222,82. On my 16 meg RAMlink it was 8,255,156,82. On my CMD FD-4000 it was 77,25,1,82. On my 1571 with JiffyDOS it was 56,40,169,144. The program still knows it's a 1571 and my 1581 has JiffyDOS too and the program says "1581". ------------ Category 4, Topic 15 Message 9 Sun May 07, 1995 R.DAY (Forwarded) I read that the 1540 drive had a rom chip with a number on it like this. 325303-xx the xx being I guess 01 or 02 like that. So if you put a new rom chip were that chip was you would have a 1541 drive. You just had to replace it with a rom chip with a number 901229-xx the xx being 01 to 05. Does any one have a ROM chip laying around with the 325303-xx numbers? If you do please let me know! I like to get a look at how the code looked in this rom. Some one must have it laying around if you upgraded from a 1540 to a 1541. ------------ Category 4, Topic 15 Message 10 Wed May 10, 1995 R.DAY (Forwarded) CMD I was thinking if all the commodore drives you sell have JiffyDOS in them, then what do you do with the old DOS?Does any of the old DOS chips have a 02, 04 version on them? I think it is super that you sell them with JiffyDOS! I bet if the 64 would of came out with JiffyDOS when they 1st sold the 64 it my of been bigger then IBM is now. I checked the differences between the 1541 JiffyDOS and the 05 version of CBM DOS. You did a lot of changes. With all the changes it is something that JiffyDOS is so compatible. I have not tern JiffyDOS off of my 1541 drive in so long that I can't remember the last this I did. How menny people do you think don't have JiffyDOS yet? ------------ Category 4, Topic 15 Message 11 Wed May 10, 1995 CMD-DOUG (Forwarded) Odds are that the DOS ROMs we pull just get tossed; I don't work in that area, so I don't know for sure, but that's what I'd suspect. There's undoubtedly millions of machines out there yet that don't have JiffyDOS. ------------ Category 4, Topic 15 Message 12 Wed May 24, 1995 R.DAY (Forwarded) With Fred Bowen in the RTC last night I got some info! 1541 DOS 901229-02 and 901229-04 never came out. They were intermediate sor of DOSes. The track 0 senser was not on 1541B's because "Manufacturing could never coordinate which boards were matched with which drivce mechanisms. It happened all the time." This was the most of the info I was looking for. No one else could tell me. Fred's memery was not too good ether he said. ------------ Category 4, Topic 15 Message 13 Fri Jun 02, 1995 R.DAY (Forwarded) I just uploaded a file called "test dos version" It was a file by F.Bowen but I updated it to tell the number of the 1541 dos you have. If any one runs this file on a 1541 and it says "1541b with update version please let me know! I like to see this ROM. I like to see if any one has a 1540 rom too. I don't know what dos version 1540 drive came in. So if you know please let me know. I think most people will have jiffyDOS or 251968-03 for a 1541-II or the very most 901229-05 version. ------------ Category 4, Topic 15 Message 14 Sat Jun 03, 1995 R.DAY (Forwarded) I got out my old 1541 installation for jiffyDOS and in it it says about the 1541"C" board. "a built-in track 1 sensor, which was included to eliminate the infamous "head knock" of earlier 1541's. For some reason, however, Commodore decided to disable the sensor, which lets the head on the 1541"C" rattle anyway." Well I asked Fred Bowen about this in the RTC. He said, "All the 'bump' stuff was greatly affected by the particular drive mechanism. Some of the mods (may be that was the -04 rev included patches for track-0 sensors, but just as we thought we'd finally get a trk-0 sensor, along came a cheaper drive without one :-( Manufacturing could never coordinate which boards were matched with which drivce mechanisms. It happened all the time." So I guess Commodore just was not organized enough to see if the drive had a track-0 sensor on it so they left them all bump. If they did use a drive with out the track-0 sensor with that DOS it would not of worked right. It could not find what track it was on. So Commodore just let it bump. But I but the designers of the board wanted it. But Commodore did not. It's easy for you to cut Jumper 3. But even if you get the JiffyDOS ROM for the 1541"B" it will not have this DOS patch in it. Even if you switch it back to the old ROM. In JiffyDOS the old ROM is the 901229-05 ROM. As best as I know. But CMD my of fix that. ------------ Category 4, Topic 15 Message 15 Sun Jun 11, 1995 C128.JBEE (Forwarded) > R.DAY > Does any one have a ROM chip laying around with the 325303-xx numbers? Contact Earl Harvey, I am pretty sure I sent him one. I had posted it in Cat#10 and when noone claimed it I sent it along to him. ------------ Category 4, Topic 15 Message 16 Wed Jun 21, 1995 R.DAY (Forwarded) There is a 901229-02 version of the 1541 dos! It's checksum at $fee6 is $10. It comes in the long board and says VIC-1541 Single drive on it. So it looks like the 901229-04 was the one never put out. ------------ 4 ? ************ Topic 17 Sat May 27, 1995 E.ROHAN (Forwarded) Sub: Interface CMD HD to IBM PC Want to use my 85 MB HD with my PC using external connection. Has anyone done this before? If yes please leave message. CMD could not help me. No experience with IBM PC adaptation. 4 message(s) total. ************ ------------ Category 4, Topic 17 Message 1 Sat May 27, 1995 L.SCHONDER [C128.LOU] (Forwarded) I would recommend SELLING your HD40/85, and buying a 800-some meg HD for your PC. For a little more money and less headaches, you'll get a lot more for your PC. Another idea is to sell the PC, of course, and invest the money in medium- growth mutual funds. ;) ------------ Category 4, Topic 17 Message 2 Mon May 29, 1995 C128.JBEE (Forwarded) The CMD HD is SCSI and the PC most likely uses a IDE type disk drive. If you tell us why you are trying to do this, then we can probably suggest an easier way to do whatever you are trying to do :) ------------ Category 4, Topic 17 Message 3 Mon May 29, 1995 C128.JBEE (Forwarded) BTW: This topic is being moved to Cat#4 Topic 42. ------------ Category 4, Topic 17 Message 4 Wed Jun 07, 1995 E.ROHAN (Forwarded) That I might sell. Thanks.*S ------------ 4 ? ************ Topic 21 Fri Jun 16, 1995 I.COBB1 (Forwarded) Sub: Old 1571s Looking for info about pre-ROM upgrade '71s 3 message(s) total. ************ ------------ Category 4, Topic 21 Message 1 Fri Jun 16, 1995 I.COBB1 (Forwarded) I have one of these "wonderful" machines that never received the upgraded ROMs. Has anyone ever seen a software atch that gets rid of all the extra seeks that happen when writing to side 2? I know about the hardware options, but don't want to spend the $$$. The 1571 driver in Geos fixes the problem, so I'm hoping somebody else has, too. ------------ Category 4, Topic 21 Message 2 Mon Jun 19, 1995 C128.JBEE (Forwarded) > I.COBB1 > Has anyone ever seen a software atch that gets rid of all the extra The only patch I have seen is the replacement ROM. Though some software such as Superbase was rewritten to avoid the problems. ------------ Category 4, Topic 21 Message 3 Wed Jun 21, 1995 J.THOMPSO122 [JIMBOB51] (Forwarded) Buy Jiffy DOS you won't regret it unless you only use GEOS. Jimbob;] ------------ 4 ? ************ Topic 23 Sat Jul 08, 1995 I.COBB1 (Forwarded) Sub: Mach 128 Help me with this cartridge 2 message(s) total. ************ ------------ Category 4, Topic 23 Message 1 Sat Jul 08, 1995 I.COBB1 (Forwarded) Just picked up this cartridge. Can anyone help me use it, as I didn't receive the manual. I know about [back arrow]m, but what is "Mach DOS" anad how does one use it? The packaging says that it will do things like quick formats. How? Anybody know? ------------ Category 4, Topic 23 Message 2 Mon Jul 10, 1995 J.THOMPSO122 [JIMBOB51] (Forwarded) >I.COBB1 >Just picked up this cartridge. Can anyone help me use it, Just hit Back arrow M (return) gives you a menu of commands. This works in 64 and 128 if you have the mach 128 cart. There is also a companion disk that can be ordered seperatly and only works in 64 mode. It has many Dos utilities and a disk cataloger that is great. The cart is compatible with Jiffy Dos and performs many of the same functions including speeding up the drives. Jimbob;] ------------ 4 ? Thank you for choosing GEnie. Have a nice day! Online: 32 minutes, 56 seconds.b_wN0:}~ NO CARRIER RING RING