From 602ff6754db3e4e85605af1f21699994f4a5e95e Mon Sep 17 00:00:00 2001 From: Safiire Date: Sat, 28 Feb 2015 17:43:43 -0800 Subject: [PATCH] Updating some of the demo asm files --- beep.asm | 2 +- demo.asm | 24 ++++++++++++------------ 2 files changed, 13 insertions(+), 13 deletions(-) diff --git a/beep.asm b/beep.asm index 3d502e1..7c69696 100644 --- a/beep.asm +++ b/beep.asm @@ -6,7 +6,7 @@ start: LDA #$01 ; square 1 STA $4015 - LDA #$08 ; period low + LDA #$F8 ; period low STA $4002 LDA #$02 ; period high STA $4003 diff --git a/demo.asm b/demo.asm index edf82b1..44c4c9a 100644 --- a/demo.asm +++ b/demo.asm @@ -31,7 +31,7 @@ sprite: main: ; Disable interrupts and decimal flag sei - cld + cld ; Wait for 2 vblanks wait_vb1: @@ -60,18 +60,18 @@ main: ldx #$FF txs - ; Disable all graphics. + ; Disable all graphics. lda #$00 sta $2000 sta $2001 - jsr init_graphics - jsr init_input - jsr init_sound + jsr init_graphics + jsr init_input + jsr init_sound jsr init_ppu ; Resume interrupts and loop here forever - cli + cli forever: jmp forever @@ -112,8 +112,8 @@ init_sound: sta $4015 lda #$00 sta $4001 - lda #$40 - sta $4017 + lda #$40 + sta $4017 rts @@ -237,7 +237,7 @@ react_to_input: lda $4016 ; Is the A button down? AND #$01 - beq not_a + beq not_a ldx $01 ; a bne a_done ; Only react if the A button wasn't down last time. sta $01 ; Store the 1 in local variable 'a' so that we this is @@ -255,7 +255,7 @@ a_done: ldx sprite ; Load Y value cpx #$07 beq not_up ; No going past the top of the screen - dex + dex stx sprite not_up: @@ -271,7 +271,7 @@ not_dn: rts ; Ignore left and right, we don't use 'em reverse_dx: - lda #$FF + lda #$FF eor $00 ; dx clc adc #$01 @@ -291,7 +291,7 @@ scroll_screen: lda #$00 sta $2005 ; Write 0 for Horiz. Scroll value stx $2005 ; Write the value of 'scroll' for Vert. Scroll value - + no_scroll: rts