Steven N. Hirsch wrote:
Eric Smith wrote:mjmahon@aol.com (Michael J. Mahon) writes about the PCPI Applicard:The interface with the 6502 should be OK, since it's just a shared register with software handshaking.Speaking of which, is there technical documentation on the Applicard, describing the registers as seen from both the 6502 and Z80 side, and any other software-visible features of the hardware?There was documentation with a vengeance! This was easily the most thoroughly documented Apple II board of its day (and maybe of any day.) There was a complete OEM development kit available with all the various APIs (6502 and Z80) and a lot of the BIOS code. It was a pleasure to write drivers for, and I earned quite a few bucks in the mid-80s doing precisely that. Among others, I'm responsible for the AE Ramworks
Wait a minute! Hold the phone here. Are you telling me that the PCPI card can acess the RAM on my RAMWorks III card? This enquiring mind wants to know more!
Roy and
RamFactor PCPI drivers.I think most (if not all) of the printed docs were floating around in ASCII format, too.The engineers behind the Applicard, Wink Saville and Ray Klein, are still (last I knew) active in the industry, so I wouldn't want to simply post it without their permission.Steve