Re: Later Apple II Technical Manuals

["josephoswaldgg@hotmail.com" <josephoswald@gmail.com>]

Great Hierophant wrote:
> I got my Apple IIe Technical Reference Manual yesterday.  It has over
> 400 pages and they all seem to be there.  The cover pages are in rough
> shape, but the text is fine.  The schematic would require a higher
> resolution to properly scan because it is shrunk onto the normal size
> pages.  It does cover the Enhanced IIe and the differences between the
> original and Enhanced IIe.  It gives a full monitor listing.  It gives
> pinouts for the custom Apple IIe chips (MMU, IOU, PAL) as well as the
> ROM, RAM and CPU chips.  It does not give circuit level diagrams of the
> custom chips, however, so its usefulness in recreating an Apple II in
> FPGA is limited.  It does cover 80-column text and graphic modes to an
> extent.

IIRC, Jim Sather did a bit of work in _Understanding the Apple IIe_ to
determine the gate-level functionality of the custom chips. Not
necessarily exactly, but a mostly-compatible CUPL (?) description that
matched all the behavior he could determine.