mirror of https://github.com/KarolS/millfork.git
40 lines
653 B
Plaintext
40 lines
653 B
Plaintext
// Hardware addresses for C64
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// CIA1
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byte cia1_pra @$DC00
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byte cia1_prb @$DC01
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byte cia1_ddra @$DC02
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byte cia1_ddrb @$DC03
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byte cia2_pra @$DD00
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byte cia2_prb @$DD01
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byte cia2_ddra @$DD02
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byte cia2_ddrb @$DD03
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inline asm void cia_disable_irq() {
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LDA #$7f
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LDA $dc0d
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LDA $dd0d
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LDA $dc0d
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LDA $dd0d
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}
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inline void vic_bank_0000() {
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cia2_ddra = $C0
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cia2_pra = $C0
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}
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inline void vic_bank_4000() {
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cia2_ddra = $C0
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cia2_pra = $80
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}
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inline void vic_bank_8000() {
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cia2_ddra = $C0
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cia2_pra = $40
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}
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inline void vic_bank_C000() {
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cia2_ddra = $C0
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cia2_pra = $00
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} |