OPTON@uhvax1.uh.EDU (03/23/88)
Phillip Keen asked for opinions on CPM3. Here's my two cents: I first learned CPM on a CPM3 system. I found it very clumsy. I then at the suggestion of several folks 'downgraded' to CPM 2.2. CPM2.2 is, to my mind, far more straightforward to use, and definitely a lot easier to program for than cpm3. I rewrote, er, adapted, the BIOS from the CPM3 into the CPM2.2 BIOS that I now use. I then a short time later, at the suggestion of the same people, installed ZCPR3 from Echelon. It was a straightforward procedure underCPM2.2. It was impossible under CPM3. Oh, and I have found compatibility problems between 2.2 and 3. Bottom line: If one is going to use another CCP (highly recommended), use your cpm2.2. I strongly recommend ZCPR3, but there are others. I would not even waste my time with CPM3 even if they gave away free food with it. Hope this helps. E-mail me if I can be of further assistance. Lee Thomison BITNET: OPTON@UHVAX1 landline: (713) 749-3127
michaelk@copper.TEK.COM (Michael D. Kersenbrock) (03/24/88)
Expires: Sender: Followup-To: >Phillip Keen asked for opinions on CPM3. Here's my two cents: >I first learned CPM on a CPM3 system. I found it very clumsy. I then >at the suggestion of several folks 'downgraded' to CPM 2.2. CPM2.2 >is, to my mind, far more straightforward to use, and definitely a lot >easier to program for than cpm3. I rewrote, er, adapted, the BIOS from >the CPM3 into the CPM2.2 BIOS that I now use. I then a short time later, >at the suggestion of the same people, installed ZCPR3 from Echelon. >It was a straightforward procedure underCPM2.2. It was impossible under >CPM3. Oh, and I have found compatibility problems between 2.2 and 3. >Bottom line: If one is going to use another CCP (highly recommended), >use your cpm2.2. I strongly recommend ZCPR3, but there are others. >I would not even waste my time with CPM3 even if they gave away free >food with it. > >Hope this helps. E-mail me if I can be of further assistance. > >Lee Thomison >BITNET: OPTON@UHVAX1 >landline: (713) 749-3127 I disagree strongly with this opinion of CPM 3.0. I started with 2.2 (where I wrote my own BIOS, etc...I did everything down to the nitty gritty level), and then upgraded to 3.0 (when DRI released it, and I bought the "generic" upgrade kit). Documentation was good, and a million times better than 2.2 . Performance was also a million times better with 3.0 than with 2.2. There are SOME incompatiblities, but very few, and generally not too important. CP/M 3.0 had most of the improvements that the original MS-DOS "did" to CP/M. :-) With the additon of CCP+ (in simtel20...) and full usage/knowlege of the improvements, I'd say 3.0 is MUCH MUCH MUCH MUCH MUCH better than 2.2. To tell the truth, my CP/M+ develoment environment looks more like BSD Unix ("make", grep, VERY compatible library, etc) than CP/M (which I like BTW). To give you an idea of what I'm using: 1) My system is a "homebrew" Z80H one with 1Mb of 0-waitstate banked memory (someday with a Z280 if I can't afford an Amiga 2000 first). My CP/M+ is the *banked* version. The *unbanked* version may be different in usablity. 2) My bios (that I wrote) implements 720K of FAST/DMA'd ramdisk and about 180K of my OWN floppy-disk cache on top of DRI's (didn't fully like their algorithm). 3) I modified the library of my C-Compiler (Manx Aztec) to dynamically check for CP/M 3.0, and if it is "true", to use 3.0-only features that makes the floppy access (never mind the disk cacheing) 3 times faster than 2.2 on the same disks (I did many other things to my compiler, but that's another story). Because, however, DRI does not really sell CP/M 3.0 anymore (that I can tell), 2.2 and ZCPR may be the best choice to go to nowdays from 2.2, but, the reason isn't because 3.0 is less good, it's just less available. -- Mike Kersenbrock Tektronix Microcomputer Development Products Aloha, Oregon
dbraun@cadev4.intel.com (Doug Braun ~) (03/25/88)
I'm sold! I have yet another homebrew CP/M system (which is sort of in the process of being upgraded to a Z280), and I would love to upgrade it to CP/M 3.0. But if Digital Research doesn't sell generic CP/M 3.0 anymore, what can I do? I would need 8" SSSD disks, and all the documentation needed to write your own BIOS. If anyone knows of a place that sells it, or has a copy that they want to sell, please let me know. Doug Braun Intel Corp CAD 408 765-4279 / decwrl \ | hplabs | -| oliveb |- !intelca!mipos3!cadev4!dbraun | amd | \ qantel /
tech@auvax.UUCP (Richard Loken) (03/26/88)
From article <1901@mipos3.intel.com>, by dbraun@cadev4.intel.com (Doug Braun ~): > to CP/M 3.0. But if Digital Research doesn't sell generic CP/M 3.0 anymore, > what can I do? I would need 8" SSSD disks, and all the documentation needed > to write your own BIOS. If anyone knows of a place that sells it, or has > a copy that they want to sell, please let me know. > > Doug Braun Intel Corp CAD > 408 765-4279 Tell me too. Tell us all. Isn't it ironic that the guys at Intel don't know about CP/M anymore? ********* 73 ********** Richard Loken VE6BSV . **** .. **** Athabasca University .... **** Athabasca, Alberta Canada ..........**** ihnp4!alberta!auvax