Re: Clone IOU / MMU Chip

["Bryan Parkoff" <nospam@nospam.com>]

"David Wilson" <mcs6502@gmail.com> wrote in message 
1168898376.061503.146190@q2g2000cwa.googlegroups.com">news:1168898376.061503.146190@q2g2000cwa.googlegroups.com...
> aiiadict@gmail.com wrote:
>> Bryan Parkoff wrote:
>> >     Would you like to clone IOU / MMU chips?
>
>> prolly do it just by examining pre iou/mmu motherboard schematics..
>
> I have the schematics of my MPF-III (model 312) which is a IIe clone
> built from standard LSTTL plus two additional PALs used as address
> decoders. The video portion of the circuitry is on a daughter board the
> size of an Apple II prototyping card. Later Multitech found a source of
> MMU and IOU chips and released the MPF-III (model 327).
>
> I expect that the MMU & IOU could be implemented fairly easily in an
> FPGA or similar chip.

David,

    Are you sure that schematics of MPF-III is not identical to Jim Sather's 
schematic?  Do you expect that schematic of MPF-III can be duplicated and be 
built in custom chip on the MMU / IOU sockets of Apple //e's motherboard. 
How can I obtain schematic of MPF-III for curiousity?

Bryan Parkoff