IBM B50 manual Firmware Checkpoints

Firmware Checkpoints

The following table contains a list of checkpoints issued by the firmware during initialization.

Checkpoint	Description	Repair Action
(hex)
E100	Reserved/Unused	See “Unresolved problems” on page	3-26
E101	Video-enabled,	See “Unresolved problems” on page	3-26
	extended memory
	test (Quick restart
	path)
E102	Firmware restart	See “Unresolved problems” on page	3-26
	with cfg'd parms
	(Quick restart path)
E103	Set memory refresh	See “Unresolved problems” on page	3-26
	(composite img)
E104	Set memory refresh	See “Unresolved problems” on page	3-26
	(recovery block)
E105	Transfer control to	See “Boot Problems or Concerns” on page 3-27
	O.S. (normal boot)
E108	Run recovery block	See “Unresolved problems” on page	3-26
	base memory (test
	2k), set stack
E109	Copy CRC	See “Unresolved problems” on page	3-26
	verification code to
	RAM
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	See “Unresolved problems” on page	3-26
	verification code in
	RAM
E10D	Compute composite	See “Unresolved problems” on page	3-26
	image CRC
E10E	Jump back to ROM	See “Unresolved problems” on page	3-26
E10F	Transfer control to	See “Unresolved problems” on page	3-26
	Open Firmware
E110	Turn off cache,	See “Unresolved problems” on page	3-26
	Check if composite
	image CRC is valid

3-147046 Model B50 Service Guide