Technical data

Troubleshooting
4-41
DIGITAL PC 3500/5510
Code Description
BEh Clear screen before booting (optional)
BFh Check virus and backup reminders
C0h Try to boot with INT 19
D0h Interrupt handler error
D2h Unknown handler error
D4h Pending interrupt error
D6h Initialize option ROM error
D8h Shutdown error
DAh Extended Block Move
DCh Shutdown 10 error
* If the BIOS detects error 2C, 2E, or 30 (base 512K RAM error), it displays an additional word-bitmap (
xxxx
)
indicating the address line or bits that failed. For example, "2C 0002" means address line 1 (bit one set) has failed.
"2E 1020" means data bits 12 and 5 (bits 12 and 5 set) have failed in the lower 16 bits. Note that error 30 cannot
occur on 386SX systems because they have a 16 rather than 32-bit bus. The BIOS also sends the bitmap to the
port-80 LED display. It first displays the check point code, followed by a delay, the high order byte, another delay,
and then the low order byte of error. It repeats this sequence continuously.