Property: PortMask

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This is a property of type Text.

Description
  • The bit mask of decoding rules for I/O port. (en)

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Showing 20 pages using this property.
D
Datagear DMA Port +
---- ---- 0110 1011  +
I
I2C clock +
%0001 0000 0011 1011 ??  +
I2C data +
%0001 0001 0011 1011 ??  +
K
Kempston Joystick +
%---- ---- 0001 1111  +
Kempston Joystick 2 +
%---- ---- 0011 0111  +
Kempston Mouse Buttons +
%---- ---0 --0- ----  +
Kempston Mouse X +
%---- -0-1 --0- ----  +
Kempston Mouse Y +
%---- -1-1 --0- ----  +
Keyboard +
%xxxx xxxx ---- ---0 where only one bit in x is 0  +
L
Layer 2 Access Port +
%0001 0010 0011 1011 ??  +
M
MB02 DMA Port +
---- ---- 0000 1011  +
Memory Paging Control +
%01-- ---- ---- --0-  +
N
Next Memory Bank Select +
%1101 1111 1111 1101  +
P
Plus 3 Memory Paging Control +
%0001 ---- ---- --0-  +
S
Sound Chip Register Write +
%10-- ---- ---- --0-  +
SpecDrum DAC Output +
%---- ---- --01 1111  +
Sprite Attribute Upload +
%---- ---- 0101 0111  +
Sprite Pattern Upload +
%---- ---- 0101 1011 ??  +
Sprite Status/Slot Select +
%0011 0000 0011 1011 ??  +
T
TBBlue Register Access +
%0010 0101 0011 1011  +

This is a property of type Text.

Description
  • The bit mask of decoding rules for I/O port. (en)

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