Foxconn C51XEM2AA User Manual page 110

Code(hex) Name
3C Test Timer
3D Reserved
3E Test 8259-1 Mask
3F Reserved
40 Test 8259-2 Mask
41 Reserved
42 Reserved
43 Test Stuck Interrupt
44 Reserved
45 Reinit serial port
46 Reserved
47 EISA Test
48 Reserved
49 Size Memory
4A Reserved
4B Reserved
4C Reserved
4D Reserved
4E Init APIC
4F Reserved
50 USB init
51 Reserved
Chapter 6
Description
Test 8254 Timer 0 Counter 2.
Verify 8259 Channel 1 masked
interrupts by alternately turning off
and on the interrupt lines.
Verify 8259 Channel 2 masked
interrupts by alternately turning off
and on the interrupt lines.
Turn off interrupts then verify no
8259's Interrupt interrupt mask
register is on. Test 8259 Force an
interrupt and verify the interrupt
occurred.
Reinitialize Preboot agent serial port
If EISA non-volatile memory
checksum is good, execute EISA
initialization. If not, execute ISA tests
and clear EISA mode flag.
Size base memory from 256K to
640K and extended memory above
1MB.
Initialize APIC and set MTRR
Initialize USB controller
Appendix
103