Apple-2-SW/dos33fsprogs
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a bit faster mockingboard

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This commit is contained in:
Peter Ferrie 2019-06-03 14:41:14 -07:00
parent 6afee2f6ea
commit 0d861e16c7
3 changed files with 18 additions and 21 deletions
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13
pt3_player/interrupt_handler.s
View File

@ -99,9 +99,9 @@ mb_not_13:
lda #MOCK_AY_LATCH_ADDR ; latch_address for PB1 ; 2
sta MOCK_6522_ORB1 ; latch_address on PB1 ; 4
sta MOCK_6522_ORB2 ; latch_address on PB2 ; 4
lda #MOCK_AY_INACTIVE ; go inactive ; 2
sta MOCK_6522_ORB1 ; 4
sta MOCK_6522_ORB2 ; 4
ldy #MOCK_AY_INACTIVE ; go inactive ; 2
sty MOCK_6522_ORB1 ; 4
sty MOCK_6522_ORB2 ; 4
; value
lda AY_REGISTERS,X ; load register value ; 4
@ -110,11 +110,10 @@ mb_not_13:
lda #MOCK_AY_WRITE ; ; 2
sta MOCK_6522_ORB1 ; write on PB1 ; 4
sta MOCK_6522_ORB2 ; write on PB2 ; 4
lda #MOCK_AY_INACTIVE ; go inactive ; 2
sta MOCK_6522_ORB1 ; 4
sta MOCK_6522_ORB2 ; 4
sty MOCK_6522_ORB1 ; 4
sty MOCK_6522_ORB2 ; 4
;===========
; 62
; 60
mb_no_write:
inx ; point to next register ; 2
cpx #14 ; if 14 we're done ; 2

13
pt3_player/mockingboard_a.s
View File

@ -90,9 +90,9 @@ write_ay_both:
lda #MOCK_AY_LATCH_ADDR ; latch_address on PB1 ; 2
sta MOCK_6522_ORB1 ; latch_address on PB1 ; 3
sta MOCK_6522_ORB2 ; latch_address on PB2 ; 3
lda #MOCK_AY_INACTIVE ; go inactive ; 2
sta MOCK_6522_ORB1 ; 3
sta MOCK_6522_ORB2 ; 3
ldy #MOCK_AY_INACTIVE ; go inactive ; 2
sty MOCK_6522_ORB1 ; 3
sty MOCK_6522_ORB2 ; 3
; value
lda MB_VALUE ; 3
@ -101,13 +101,12 @@ write_ay_both:
lda #MOCK_AY_WRITE ; ; 2
sta MOCK_6522_ORB1 ; write on PB1 ; 3
sta MOCK_6522_ORB2 ; write on PB2 ; 3
lda #MOCK_AY_INACTIVE ; go inactive ; 2
sta MOCK_6522_ORB1 ; 3
sta MOCK_6522_ORB2 ; 3
sty MOCK_6522_ORB1 ; 3
sty MOCK_6522_ORB2 ; 3
rts ; 6
;===========
; 53
; 51
;=======================================
; clear ay -- clear all 14 AY registers
; should silence the card

13
pt3_player/pt3_timer.s
View File

@ -411,9 +411,9 @@ mb_not_13:
lda #MOCK_AY_LATCH_ADDR ; latch_address for PB1 ; 2
sta MOCK_6522_ORB1 ; latch_address on PB1 ; 4
sta MOCK_6522_ORB2 ; latch_address on PB2 ; 4
lda #MOCK_AY_INACTIVE ; go inactive ; 2
sta MOCK_6522_ORB1 ; 4
sta MOCK_6522_ORB2 ; 4
ldy #MOCK_AY_INACTIVE ; go inactive ; 2
sty MOCK_6522_ORB1 ; 4
sty MOCK_6522_ORB2 ; 4
; value
lda AY_REGISTERS,X ; load register value ; 4
@ -422,11 +422,10 @@ mb_not_13:
lda #MOCK_AY_WRITE ; ; 2
sta MOCK_6522_ORB1 ; write on PB1 ; 4
sta MOCK_6522_ORB2 ; write on PB2 ; 4
lda #MOCK_AY_INACTIVE ; go inactive ; 2
sta MOCK_6522_ORB1 ; 4
sta MOCK_6522_ORB2 ; 4
sty MOCK_6522_ORB1 ; 4
sty MOCK_6522_ORB2 ; 4
;===========
; 62
; 60
mb_no_write:
inx ; point to next register ; 2
cpx #14 ; if 14 we're done ; 2