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First os version with ABI number and working system calls

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This commit is contained in:
Daniele Verducci su MatissePenguin
2020-12-30 19:58:32 +01:00
parent b1f9788772
commit ef58b417e6
12 changed files with 81 additions and 49 deletions
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38
assembly/applications/tests/hd44780_lcd_test_procedure.asm Normal file
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;hd44780 lcd test procedure
LCD_INSTR_REG: EQU %00000000
LCD_DATA_REG: EQU %00000001
;reset procedure
ld a,%00111000
out (LCD_INSTR_REG),a
ld a,%00001000
out (LCD_INSTR_REG),a
ld a,%00000001
out (LCD_INSTR_REG),a
;init procedure
ld a,%00111000
out (LCD_INSTR_REG),a
ld a,%00001110
out (LCD_INSTR_REG),a
;write characters to display
ld a,%01000100
out (LCD_DATA_REG),a
ld a,%01100001
out (LCD_DATA_REG),a
ld a,%01101110
out (LCD_DATA_REG),a
ld a,%01101001
out (LCD_DATA_REG),a
ld a,%01100101
out (LCD_DATA_REG),a
ld a,%01101100
out (LCD_DATA_REG),a
ld a,%01100101
out (LCD_DATA_REG),a
ld a,%00100001
out (LCD_DATA_REG),a
halt