hanscom@lll-es-s05.UUCP (03/31/87)
>Has anyone heard of any programs which allow you to run CP/M 2.2 pro- >grams under MS-DOS on PC's. I found one which was supposed to emulate >a Z-80 and CP/M 2.2 on GEnie, but it does not work. Are there any >others out there? There are a number, but the best one I've found is called "Z80MU" by Joan Riff of ComputerWise Consulting Services, P. O. Box 813, McLean, Va. 22101. It is available from a number of "public domain copying services" for $3-$6. Check out the ads in Computer Shopper (esp. the last 50 pages). Computer shows are another excellent source of pd software. I got a catalog from MicroCornucopia (P. O. Box 223, Bend, OR 97709) last night, showing a pd disk (MS-DOS#22) with a CP/M emulator that makes use of the V-20 subset of 8080 instructions to run 8080 CP/M stuff. They ask $8 per disk for non-subscribers, and $6 otherwise. The emulators that use the 8088 instruction set (like Z80MU) are slow because they execute many 8088 op codes to emulate one Z-80 op code. Z80MU claims to match the performance of a 1MHz Z-80. The V-20 emulators are faster because they execute 8080 op codes as a part of their instruction set, but they limit you to programs written for the 8080. Get a copy of Z80MU and try it out. I use it on a clone, and it works just fine. If you can't locate a copy, contact me and we can arrange to copy it for you, however I'm not set up to be able to make lots of copies. ---Roger Hanscom---
jdb@NCSC.ARPA.UUCP (04/01/87)
The Z80MU CP/M 2.2 emulator on a PC is available from SIMTEL20 in the pc-blue libraries. The path is: pd:<pc-blue.vol185> Contents of this volume are: PC/Blue volume 185 Z80 CP/M 2.2 Emulation operates under PC-DOS 185.01 820INIT .ASM 7K 6A E1 Z80 CP/M 2.2 Emulation 185.02 820INIT .COM 1K 85 BF / 185.03 820INIT .CTL 4K D1 5B / 185.04 820INIT .PRN 21K 7C C5 / 185.05 README .DOC 1K 7F 0F / 185.06 Z80MU .DOC 192K 6B E8 / 185.07 Z80MU .EXE 95K 72 EB / The convention used in the pc-blue archives is that files with version number of ".1" are binary and ".2" are ASCII. The program Z80MU seems to work well for the limited cases I have tried. Don't know about 820INIT. David Brown
W8SDZ@SIMTEL20.ARPA.UUCP (04/03/87)
The latest versions of the CP/M 2.2 emulators for MSDOS are alive and well on Simtel20: Filename Type Bytes CRC Directory PD:<MSDOS.EMULATORS> V20-80.COM.1 BINARY 7552 2D8BH Z80MU310.ARC.1 BINARY 165376 E0F5H --Keith Petersen Arpa: W8SDZ@SIMTEL20.ARPA Uucp: {bellcore,decwrl,harvard,lll-crg,ucbvax,uw-beaver}!simtel20.arpa!w8sdz GEnie Mail: W8SDZ RCP/M Royal Oak: 313-759-6569 (300, 1200, 2400 bps)
jdb@NCSC.ARPA.UUCP (04/03/87)
Sorry, I don't remember the specific programs I tried. Just downloaded a few at random to see if it really worked. One that I tried that didn't work was the CHEF program in the pd:<cpm.database> directory. A friend wanted a recipe program for his PC to convince his wife how useful this thing he was spending so much money (and time) was. I have since noticed that there has been an update to CHEF so I don't know if it was a Z80MU problem or a CHEF problem. If I get around to tryingh it again, I will try to do a more controlled test and let you know. david brown