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Forums > C64 Coding > CBM-key

2013-02-06 20:41

The Gothicman
Account closed

Registered: Aug 2011
Posts: 40

CBM-key

Just getting mad and can't find anything on the net:

When I want to check the CBM-key via $ffe4...
...which code is it???

2013-02-06 20:43

Burglar

Registered: Dec 2004
Posts: 1033

it doesnt trigger $ffe4, its like pressing shift.

use the following instead

lda $dc01
cmp #$df
beq cbmkey_pressed

2013-02-06 20:56

The Gothicman
Account closed

Registered: Aug 2011
Posts: 40

Thanx! :)

2013-02-07 08:17

Bitbreaker

Registered: Oct 2002
Posts: 500

As long as the keyboard handler is still called by some irq:

lda $028d
and #$02
bne cbm_pressed

Burglar's solution of course does not need a kernal or calling $ea31 after irq, so it is more flexible.

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