pt3_lib: make more similar to the cycle-counting version
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Vince Weaver
parent
d77e4da2de
commit
8e5bf611a9
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@ -113,47 +113,57 @@ write_ay_both:
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; address
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write_ay_smc1:
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stx MOCK_6522_ORA1 ; put address on PA1 ; 3
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stx MOCK_6522_ORA2 ; put address on PA2 ; 3
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stx MOCK_6522_ORA1 ; put address on PA1 ; 4
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stx MOCK_6522_ORA2 ; put address on PA2 ; 4
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lda #MOCK_AY_LATCH_ADDR ; latch_address on PB1 ; 2
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write_ay_smc2:
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sta MOCK_6522_ORB1 ; latch_address on PB1 ; 3
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sta MOCK_6522_ORB2 ; latch_address on PB2 ; 3
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sta MOCK_6522_ORB1 ; latch_address on PB1 ; 4
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sta MOCK_6522_ORB2 ; latch_address on PB2 ; 4
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ldy #MOCK_AY_INACTIVE ; go inactive ; 2
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write_ay_smc3:
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sty MOCK_6522_ORB1 ; 3
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sty MOCK_6522_ORB2 ; 3
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sty MOCK_6522_ORB1 ; 4
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sty MOCK_6522_ORB2 ; 4
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;===========
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; 28
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; value
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lda MB_VALUE ; 3
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write_ay_smc4:
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sta MOCK_6522_ORA1 ; put value on PA1 ; 3
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sta MOCK_6522_ORA2 ; put value on PA2 ; 3
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sta MOCK_6522_ORA1 ; put value on PA1 ; 4
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sta MOCK_6522_ORA2 ; put value on PA2 ; 4
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lda #MOCK_AY_WRITE ; ; 2
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write_ay_smc5:
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sta MOCK_6522_ORB1 ; write on PB1 ; 3
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sta MOCK_6522_ORB2 ; write on PB2 ; 3
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sta MOCK_6522_ORB1 ; write on PB1 ; 4
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sta MOCK_6522_ORB2 ; write on PB2 ; 4
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write_ay_smc6:
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sty MOCK_6522_ORB1 ; 3
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sty MOCK_6522_ORB2 ; 3
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sty MOCK_6522_ORB1 ; 4
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sty MOCK_6522_ORB2 ; 4
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;===========
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; 29
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rts ; 6
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;===========
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; 51
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; 63
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write_ay_both_end:
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;.assert >write_ay_both = >write_ay_both_end, error, "write_ay_both crosses page"
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;=======================================
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; clear ay -- clear all 14 AY registers
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; should silence the card
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;=======================================
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; 7+(74*14)+5=1048
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clear_ay_both:
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ldx #14
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lda #0
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sta MB_VALUE
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ldx #13 ; 2
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lda #0 ; 2
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sta MB_VALUE ; 3
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clear_ay_left_loop:
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jsr write_ay_both
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dex
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bpl clear_ay_left_loop
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rts
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jsr write_ay_both ; 6+63
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dex ; 2
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bpl clear_ay_left_loop ; 3
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; -1
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rts ; 6
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clear_ay_end:
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;.assert >clear_ay_both = >clear_ay_end, error, "clear_ay_both crosses page"
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;=============================
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; Setup
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@ -113,47 +113,57 @@ write_ay_both:
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; address
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write_ay_smc1:
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stx MOCK_6522_ORA1 ; put address on PA1 ; 3
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stx MOCK_6522_ORA2 ; put address on PA2 ; 3
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stx MOCK_6522_ORA1 ; put address on PA1 ; 4
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stx MOCK_6522_ORA2 ; put address on PA2 ; 4
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lda #MOCK_AY_LATCH_ADDR ; latch_address on PB1 ; 2
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write_ay_smc2:
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sta MOCK_6522_ORB1 ; latch_address on PB1 ; 3
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sta MOCK_6522_ORB2 ; latch_address on PB2 ; 3
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sta MOCK_6522_ORB1 ; latch_address on PB1 ; 4
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sta MOCK_6522_ORB2 ; latch_address on PB2 ; 4
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ldy #MOCK_AY_INACTIVE ; go inactive ; 2
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write_ay_smc3:
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sty MOCK_6522_ORB1 ; 3
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sty MOCK_6522_ORB2 ; 3
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sty MOCK_6522_ORB1 ; 4
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sty MOCK_6522_ORB2 ; 4
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;===========
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; 28
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; value
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lda MB_VALUE ; 3
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write_ay_smc4:
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sta MOCK_6522_ORA1 ; put value on PA1 ; 3
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sta MOCK_6522_ORA2 ; put value on PA2 ; 3
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sta MOCK_6522_ORA1 ; put value on PA1 ; 4
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sta MOCK_6522_ORA2 ; put value on PA2 ; 4
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lda #MOCK_AY_WRITE ; ; 2
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write_ay_smc5:
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sta MOCK_6522_ORB1 ; write on PB1 ; 3
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sta MOCK_6522_ORB2 ; write on PB2 ; 3
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sta MOCK_6522_ORB1 ; write on PB1 ; 4
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sta MOCK_6522_ORB2 ; write on PB2 ; 4
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write_ay_smc6:
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sty MOCK_6522_ORB1 ; 3
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sty MOCK_6522_ORB2 ; 3
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sty MOCK_6522_ORB1 ; 4
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sty MOCK_6522_ORB2 ; 4
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;===========
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; 29
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rts ; 6
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;===========
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; 51
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; 63
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write_ay_both_end:
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;.assert >write_ay_both = >write_ay_both_end, error, "write_ay_both crosses page"
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;=======================================
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; clear ay -- clear all 14 AY registers
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; should silence the card
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;=======================================
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; 7+(74*14)+5=1048
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clear_ay_both:
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ldx #14
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lda #0
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sta MB_VALUE
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ldx #13 ; 2
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lda #0 ; 2
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sta MB_VALUE ; 3
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clear_ay_left_loop:
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jsr write_ay_both
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dex
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bpl clear_ay_left_loop
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rts
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jsr write_ay_both ; 6+63
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dex ; 2
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bpl clear_ay_left_loop ; 3
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; -1
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rts ; 6
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clear_ay_end:
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;.assert >clear_ay_both = >clear_ay_end, error, "clear_ay_both crosses page"
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;=============================
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; Setup
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