Routines
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63226: Read Keyboard Rows
Used by the routines at Read_Control_Keyboard_Combined and Read_Control_Keyboard_Split.
Shared keyboard row subroutine. Reads port 61438 into C and port 63486 into A.
Read_Keyboard_Rows 63226 LD A,239 Read from the keyboard;
Port Number Bit
0 1 2 3 4
239 0 9 8 7 6
63228 IN A,(254)
63230 LD C,A Stash the 61438 row result in C.
63231 LD A,247 Read from the keyboard;
Port Number Bit
0 1 2 3 4
247 1 2 3 4 5
63233 IN A,(254)
63235 RET Return.
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