Testing the key switches on a Microbee 32
6The Microbee is an Australian designed and manufactured computer from the 80s. This particular model, the Microbee 32, came out in 1982 and has 32KB of RAM with MicroWorld BASIC 5.10 and EDASM (a Z80 editor/assembler) in ROM. A couple of the key caps are missing as I experiment with retr0brighting them. It's out of its case as I've got some further work to do on it (modifying an EPROM socket from 2532 to 2732, replacing the 4700µF capacitor, replacing problem key switches).
Wrote a simple program (okay, re-using the KEY$ example from the manual) to test the key switches, now almost 40 years old.
Wasn't sure about a few of the keys as they don't print anything, like ESC, TAB and LINE FEED - this program simply displays the ASCII code of the character so I can see the key switch is actually working and also lets me test how responsive each key switch is - will replace any that require a hard bash.
00100 A0$=KEY$:IF A0$="" THEN GOTO 100
00110 PRINT "ASCII code: ";ASC(A0$)
00120 GOTO 100
{PS - sorry about my arm causing the camera to refocus}