Emerson ControlWave Instruction Manual page 123

Revised Nov-2010
HEX Code Definition
27 any init after vector table init is next.
28 setting monochrome mode.
29 setting color mode.
2A toggle parity before optional video ROM.
2B init before video ROM check.
2C control passed to video ROM.
2D video ROM returned control.
2E checking for EGA/VGA adapter found.
2F no EGA/VGA found, r/w test of video.
30 looking for video retrace signal.
31 retrace failed, checking alt. Display.
32 alt found, checking video retrace signal.
33 compare switches w/actual adapter type.
34 setting display mode.
35 check ROM BIOS data area at seg 40h.
36 setting cursor for power-on msg.
37 displaying power-on message.
38 save cursor position.
39 display BIOS ident. String.
3A display "Hit <DEL> to ..." msg.
40 preparing vm test. vrfy from display.
41 preparing descriptor tables.
42 enter virtual mode for memory test.
43 enable inits for diagnostics mode.
44 init data for checking wraparound at 0:0.
45 checking for wrap, find total memory size.
46 write extended memory test patterns.
47 write conventional memory test patterns.
48 finding low memory size from patterns.
49 finding high memory size from patterns.
4A check ROM BIOS data area again.
4B check for <DEL>, clear low mem for soft reset.
4C clearing ext mem for soft reset.
4D saving memory size.
4E on cold boot, display 1
4F on cold boot, test all of low memory.
50 adjust memsize for 1K usage.
51 system initialization in progress.
52 prepare for shutdown to real-mode.
53 saved regs & memsize, entering real-mode.
54 shutdown successful, restoring codepath.
55 disabling A20 line.
56 checking ROM BIOS data area again.
57 checking ROM BIOS data area some more.
58 clear the "Hit <DEL>" message.
59 test DMA page register.
60 verify from display memory (???).
61 test DMA0 base register.
62 test DMA1 base register.
63 checking ROM BIOS data area again.
64 checking ROM BIOS data area some more.
65 programming DMA ctrllrs 0 & 1
66 initializing INT ctrllrs 0 & 1.
67 starting keyboard test.
80 issuing reset cmd & clring output buffer
Service & Troubleshooting
ControlWave Instruction Manual (CI-ControlWave)
st
64KB memtest.
5-23