Revamped and refactored the Compaq AT clone code, including a more correct Plasma emulation and undev branch the Deskpro 386 while adding the September 1986 and January 1988 bioses.
Added Compaq AT KBC strictly for the Deskpro 386 with the right settings, including the FPU bit.
The generic AMI/Quadtel/Phoenix IBM AT's don't issue the speed problems of the pure IBM AT beyond 8Mhz, so don't limit them to 8Mhz.
This is a portable computer based around NEC V30 processor and what
seems to be a proprietary Epson chip set.
The chip set provides a XT-class keyboard controller/PPI, controller for
two DD floppy drives, CGA-compatible video, one serial and one parallel
port. There's no datasheet for the chip set.
The machine has a 640x200 monochromatic LCD display, optionally backlit
and an external CRT connector. There can be up to two floppy drives,
one of them optionally connected to an external connector (shared with
the parallel port). There are physical switches to enable the external
CRT and floppy connectors.
There's a battery-backed RTC/NVRAM that holds configuration, including
backlight timeout, UART configuration and floppy types.
The machine has two expansion slots, half the pich of a regular 8-bit
ISA, but electrically compatible. Hard drive and modem adapters were
available, I don't have them.
The checksums of the ROM images are as follows:
SHA1(2d58397f81f006e7729648dd3720e3004e20ac36) =
roms/machines/elt/HLO-B2.rom
SHA1(8c06cd3905f71f15fec2a3759cea5b2c5dc602c3) =
roms/machines/elt/HLO-A2.rom
MCA PS/2: Added Model 60 (8-slot version of 50 with the same bios) and Model 65sx (essentially the same as 55sx but with a new bios and a secondary nvram a la 70-80 but limited to 2KB of size instead of 8KB).
MCA PS/2: Made the i486 cpu selection on only on Type 3 MCA models (70-80) and not Type 2 anymore, therefore the latter is limited to 386DX cpu's only.
