Specifications

7.0.14 KEYBOARD SELF-TEST
A reauest for the keYboard's hardware ID times out after
1 second. If the ID is received, we then call the keyboard's self-test.
It is necessary to call the Self-Test a~ain at this point, as the results
the previous Self-Test could not be interpreted b~ the uninitialised
68000. The results of the current test are reported to the Keyboard
LED's, and to the 68000 via the followin~ four-b~te messa~e:
BYTE 1:
BYTE 2:
BYTE 3:
00
3D
3E
BYTE 4:
00
xx
KBID (Firmware)
KBID (Hardware)
The Keyboard ID which is stored in firmware
The Keyboard ID which is read from Jumpers
in the hardware
ERROR CODE (Self-Test)
No Errors
Key down on Powerup
Self-Test Failure, ROM or RAM
KEY CODE (Powerup)
No keys down on Powerup
Code for first key down on Powerup
If the keyboard does not r~s?ond with the hardware ID after one second,
an error is assumed and reported.