Path: utzoo!utgpu!watserv1!watmath!att!att!linac!pacific.mps.ohio-state.edu!zaphod.mps.ohio-state.edu!usc!snorkelwacker.mit.edu!bloom-beacon!eru!hagbard!sunic!lth.se!newsuser From: xrolfa@dna.lth.se (Rolf Andersson) Newsgroups: comp.sys.nsc.32k Subject: Re: Intel-based floppy controller Message-ID: <1990Nov28.224659.862@lth.se> Date: 28 Nov 90 22:46:59 GMT References: <9011280218.AA24024@Shiva.COM> Sender: newsuser@lth.se (LTH network news server) Organization: Computer Science, Lund Institute of Technology, Sweden Lines: 53 >I've recently found out about the Zilog Z80180 (aka Z180) which is a >superintegrated chip with an enchanced (20% faster at the same clock >speed) Z80 core w/ OSC, plus an MMU which allows bank access to 1MB, 2 >asynch channels (with baud rate generators), 2 DMA channels, 2 16 bit >timers and a high speed clocked serial I/O port for interprocessor >communication. It even has an HD64180 compatability mode bit! I've >seen released products which use it. Its made with 6, 8 and 10MHz(!!) >system clocks, DIP 64, PLCC 68 and QFP80 packages. Cost is about $10. Isn't that one pin-compatible with one of the newer revisions of HD61480? How about a board with a 64180, a 2797 floppy cont., 512K ram, 32K eprom, centronics port and a NCR5380 SCSI controller? That is the CP/M computer which I built about 5 Years ago. Unfortunatetly it is an double extended eurocard (approx. 200*220mm), so it wont fit in one of the SCSI slots on the pc532. But I am thinking about a wire-wrapped half-length IB-PC-like M-PC prot board with the same kind of processor, one 1MB-simm, boot-prom , a DP8490 SCSI interface, a DP8473 FDC and a printer port. I can prototype such a board if someone is willing to assist in writing software which converts it to a SCSI floppy & printer controller. I will also make the small changes in my BIOS necessary to run CPM3.0 on it. This board will be so simple that I think anyone capable of soldering can wire-wrap it. And if anyone can help me getting the parts cheap the better. Because here in Sweden components are expensive (10MHz 64180 = $45). The board could also drive a floppy compatible tape drive. I have an second hand IRWIN-125 with some manuals. Happy Hacking Rolf ------------------------------------------------------------------------------ Rolf Andersson ! INTERNET: xrolfa@dna.lu.se Sankt Mansgatan 9E ! UUCP: ...!{uunet,mcvax,munnari}!enea!dna.lu!xrolfa S-222 29 Lund, Sweden ! PHONE: int+46-46126845 ------------------------------------------------------------------------------ -- ------------------------------------------------------------------------------ Rolf Andersson ! INTERNET: xrolfa@dna.lu.se Sankt Mansgatan 9E ! UUCP: ...!{uunet,mcvax,munnari}!enea!dna.lu!xrolfa S-222 29 Lund, Sweden ! PHONE: int+46-46126845 ------------------------------------------------------------------------------