penguin86/pato-z80-home-computer
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Untested code

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This commit is contained in:
Daniele Verducci (ZenPenguin)
2021-02-22 13:59:55 +01:00
parent 75f5ce057f
commit 2c65665900
3 changed files with 35 additions and 34 deletions
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pat80-io-devices/composite-pal-adapter/software/avr-assembly/communication.asm
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@@ -11,8 +11,6 @@
; POS_COARSE: Register Y (16-bit, r31 and r30): Coarse position. Points to one of the chunks
; (character columns). 46 chunks per row, 304 rows. Used for character position, as
; 1 chunk = 1 byte = 1 character.
; POS_FINE: Register r24: Fine position. Represents the bit inside the chunk selected by POS_COARSE.
; Ignored in character mode (the character is always aligned to column). Used in graphic mode.
; Initializes and waits for a byte on PORTB
comm_init: