IBM B50 - Manual (Page 78)

Firmware Checkpoints
The following table contains a list of checkpoints issued by the firmware during
initialization.
Checkpoint
(hex) Description Repair Action
E100 Reserved/Unused See “Unresolved problems” on page 3-26
E101 Video-enabled,
extended memory
test (Quick restart
path) See “Unresolved problems” on page 3-26
E102 Firmware restart
with cfg'd parms
(Quick restart path) See “Unresolved problems” on page 3-26
E103 Set memory refresh
(composite img) See “Unresolved problems” on page 3-26
E104 Set memory refresh
(recovery block) See “Unresolved problems” on page 3-26
E105 Transfer control to
O.S. (normal boot) See “Boot Problems or Concerns” on page 3-27
E108 Run recovery block
base memory (test
2k), set stack See “Unresolved problems” on page 3-26
E109 Copy CRC
verification code to
RAM See “Unresolved problems” on page 3-26
E10A Turn on cache See “Unresolved problems” on page 3-26
E10B Flush cache See “Unresolved problems” on page 3-26
E10C Jump to CRC
verification code in
RAM See “Unresolved problems” on page 3-26
E10D Compute composite
image CRC See “Unresolved problems” on page 3-26
E10E Jump back to ROM See “Unresolved problems” on page 3-26
E10F Transfer control to
Open Firmware See “Unresolved problems” on page 3-26
E110 Turn off cache,
Check if composite
image CRC is valid See “Unresolved problems” on page 3-26
3-14 7046 Model B50 Service Guide