User`s manual

DIGITAL-LOGIC AG MPC40/A/B/C, MPC41 Manual V1.4C

9.10 Error Messages (Beep Codes)

During the boot process the BIOS produces status messages in the shape of data onto Port 80H and acous-

tically by internal beeper in case the screen is not initialized.

PHOENIX

1 1 x sort signal before

booting (INT19H)

1-2

Search for BIOS exten-

sions. 1x long, 2x short

signal by faulty checksum.

2-2-3-1 Test at not allowed inter-

rupt

1-3-4-1

Memory address error

xxxx

1-3-4-3 Memory data error xxxx

1-3-1-1 Test memory freshening

1-3-1-3 Test 8742 keyboard con-

troller

1-2-2-3 BIOS ROM checksum

1-2-3-1 Timer error

1-2-3-3 DMA controller error

1-3-3-1 Memory error

1-4-2-1 CMOS error, set standard

value in BIOS setup