Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!utgpu!water!watmath!clyde!rutgers!sunybcs!bingvaxu!leah!uwmcsd1!ig!jade!ucbvax!UHVAX1.BITNET!OPTON From: OPTON@UHVAX1.BITNET.UUCP Newsgroups: comp.os.cpm Subject: running ZCPR3 on a CPM3 system Message-ID: <8712040300.AA03540@ucbvax.Berkeley.EDU> Date: Thu, 3-Dec-87 20:53:00 EST Article-I.D.: ucbvax.8712040300.AA03540 Posted: Thu Dec 3 20:53:00 1987 Date-Received: Sun, 6-Dec-87 21:37:32 EST Sender: daemon@ucbvax.BERKELEY.EDU Organization: The ARPA Internet Lines: 33 I have an orphan computer (Visual Technology 1050) that runs CPM3 (banked). Does anyone have any experience (rumor?, advice?) on adapting the CPM3 BIOS to run ZCPR3? Following the cookbook instructions in Richard Conn's user's manual were spectacularly unsuccessful. I also tried simply lifting out the calls required for CPM 2.2, and then running SYSGEN on it, to make the system into a cpm 2.2 system, and THEN following the install procedure, but this was also unsuccessfully. (I have a sneaking suspicion that I have to change the boot sector, but I have no proof, and I don't know how to look at the boot sector.) Perusing the postings I have noticed some discussion on other BDOS replacements, such as Z80DOS and some others. What are their claims to fame, and how do they compare with each other and with ZCPR? How do I read and alter the boot sector (trk 0 sec 1 on my disks)? Also, how do I read the first two tracks? Can I change these easily? Is there a program available, preferably in the PD? (I tried to write a quick and dirty one, and the results were less than useful. So I sez to myself, 'Why reinvent the wheel?') Does anyone have any suggestions for a general purpose (and inexpensive) general accounting program for CPM based systems. I realize this is a lot of questions, so I thank everyone for their patience, and help. Lee Thomison BITNET: OPTON@UHVAX1 landline: (713) 749-3127