rzh@ICF.LLNL.GOV (R. Hanscom) (12/27/90)
Hello All -- I'm the proud (?) owner of some surplus Z80 boards that look like they have connectors for the Apple bus on them. There was no documentation available, and I'm wondering if any of you Apple CP/Mers might be able to help identify them. They are marked "Advanced Logic Systems". There is a "Z80 Card" that is a Z80B and little else but some interface chips and a small PROM/ROM(?). It does not even have an on-board clock that I can see. Also I have a "CP/M Card" from the same vendor. It is unpopulated, but looks like it would have memory, a crystal, etc. There are no component values or IC id's on the silk screen. Can somebody tell me if they are useful, or if there is documentation available for them?? roger icf!rzh@lll-winken.llnl.gov rzh@phoenix.ocf.llnl.gov
wilker@gauss.math.purdue.edu (Clarence Wilkerson) (12/27/90)
If the board has some DRAM, it's the ALR Z80 card. If no ram of its own, it may be a clone of the Microsoft Z80 card. These each require their own boot disks, but data disks are compatible between the two systems. The ALR card supported some add-on cards for extra memory , maybe even a version of CP/M Plus.