HP 9817 Handbook page 49

9817 Reference
10-3
Boot ROM Self Test Sequence
Test LED display Hex equivalent
Top 16K RAM test* 0000 0100 04
CRT alpha test 0001 1110 lE
Keyboard test 0001 0010 12
Boot ROM test 0000 0011 03
CRr graphics test 0001 1111 1F
Internal HP-IB test 0001 0100 14
I/o board test 001X XXXX 20 to 3F
ROM checksum test 0000 1101 OD
RAM test 0000 1001 09
*Self tp", sl.ops here and displays 0100 0100 (44 hexadecimal) on the LEDs unless functional
RAM is present ill the top 16K bytes of RAM space.