penguin86/pato-z80-home-computer
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Reduced columns to 46

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Daniele Verducci su MatissePenguin
2021-02-12 18:48:42 +01:00
parent 9872968720
commit b395a4dd21
3 changed files with 31 additions and 212 deletions
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9
pat80-io-devices/composite-pal-adapter/software/avr-assembly/character_generator.asm
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@@ -6,7 +6,7 @@
; This module generates the character pixels using the font present in rom
; and adds it on the framebuffer in the position indicated by POS_COARSE (Y).
.equ LINE_COLUMNS = 52 ; number of columns (characters or chunks) per line
.equ LINE_COLUMNS = 46 ; number of columns (characters or chunks) per line
; Draws character in register A to the screen at current coords (Y)
; @param r16 (HIGH_ACCUM) ascii code to display
@@ -75,11 +75,8 @@ cursor_pos_home:
clr POS_ROWP
clr POS_FINE
; Load framebuffer start position to Y
; ldi YH, high(FRAMEBUFFER)
; ldi YL, low(FRAMEBUFFER)
; TODO: First 3 lines are not visible! Outside of screen!
ldi YH, high(0x780)
ldi YL, low(0x780)
ldi YH, high(FRAMEBUFFER)
ldi YL, low(FRAMEBUFFER)
ret
; Updates framebuffer pointer (Y) to point to current text cursor position (POS_COLUMN, POS_ROWP)