Compaq 164SX user manual Beep Codes, Post Codes

Beep Codes

8.2 Beep Codes

The beep codes provide error information about the AlphaPC 164SX system. Table 8–1lists and describes the beep codes.

Table 8–1 Beep Codes

Beep Code	Description
1–2–3 1	This sequence represents the fail-safe booter startup.
4	No valid header found in ROM; loading entire ROM.
5	No memory found.
6	Checksum error detected when image was read back from memory.

1One beep and a pause, followed by two beeps and a pause, followed by three beeps.

8.3Post Codes

The post codes indicate the progress of the SROM and SRM Console firmware. Table 8–2lists and describes the post codes.

Table 8–2 Post Codes		(Sheet 1 of 3)
	Post Code
Source	(hex)	Description
SROM	00	Firmware initialization is complete
	01	CPU speed detected
	02	CPU speed converted
	03	Configuration jumpers read
	04	Bcache configuration value computed
	05	Bcache control value computed
	0C	Memory sized and memory bank 0 written
	0D	Enable Dcache
	13	All of memory rewritten (good data parity written)
	14	Memory errors cleared; start reading system ROM
	15	Loading ROM without SROM decompression
	16	Loading ROM using SROM decompression
	17	System ROM loaded to memory
	18	Icache flush code written to memory
	19	CPU errors cleared; jump to system code
	20	ISA bus reset

8–2Troubleshooting