File:Atari PC5 AMI-386 BIOS Plus User Manual.pdf

The documentation supplied with the Atari PC5: American Megatrends' AMI-386 BIOS PLUS User Manual and AMI's system board documentation, stamped by Atari Computer GmbH, Braunschweig. 132 scanned pages with a text layer; the schematic pages are low resolution but legible. Described on Atari PC5 AMI-386 BIOS Plus User Manual.

Contents, in PDF page order:

• AMI-386 BIOS user manual, section 1: installing the BIOS, the CMOS set-up, clock speed and wait-state selection from the keyboard, and the errors reported by the BIOS, including the fatal-error beep counts (1 DRAM refresh, 2 parity circuit, 3 base 64 KB RAM, 4 system timer, 5 processor, 6 keyboard controller gate A20, 7 virtual-mode exception, 8 display memory, 9 ROM BIOS checksum) and the error messages such as "CMOS battery state low".
• Section 2: AMI's built-in diagnostics for hard disk, floppy, keyboard and video.
• AMI-386 system board manual: installation, the jumper and switch list (J1 turbo LED, J2 hard reset, J4 EPROM type, J19 speaker, J20 keyboard lock, J21 four-pin battery connector for the clock and CMOS, J22 keyboard), and a system overview: 80386 at 16 MHz, optional 80387, 64 KB cache, 8.5 × 13 inch board, four 16-bit slots, one 8-bit slot and one 32-bit memory slot.
• AMI schematics: the 32-MEM 32-bit memory card (Rev A, 26 August 1987), and the 386PC system board (Rev 4A, 28 July 1987, 23 sheets), with the 80386 at U1.

It has no Atari parts list and no power supply schematic.

https://www.ataripc.net/pc5-386/documentation/atari-pc5-ami-386-bios-plus-user-manual/ (file Atari-PC5-Manual-English.pdf), retrieved 2026-10-01.

American Megatrends Inc.; distributed by Atari Computer GmbH. Scan from ataripc.net.

Copyright American Megatrends Inc., 1987. Hosted for preservation and repair reference.