mirror of
https://github.com/hsoft/collapseos.git
synced 2024-11-27 16:48:05 +11:00
f6ded7712e
This is the first commit I do entirely in VE. It's a habit I'm planning on taking as it helps a lot to find usability issues.
17 lines
564 B
Plaintext
17 lines
564 B
Plaintext
: _prevstat [ PAD_MEM LITN ] ;
|
|
: _sel [ PAD_MEM 1+ LITN ] ;
|
|
: _next [ PAD_MEM 2+ LITN ] ;
|
|
|
|
( Put status for port A in register A. Bits, from MSB to LSB:
|
|
Start - A - C - B - Right - Left - Down - Up
|
|
Each bit is high when button is unpressed and low if button is
|
|
pressed. When no button is pressed, 0xff is returned.
|
|
This logic below is for the Genesis controller, which is modal.
|
|
TH is an output pin that swiches the meaning of TL and TR. When
|
|
TH is high (unselected), TL = Button B and TR = Button C. When
|
|
TH is low (selected), TL = Button A and TR = Start. )
|
|
|
|
|
|
|
|
|