Visual Artifact Rate
78%
TIA Beam Collisions
142
VDP VRAM Status
VRAM Sync Failure
Recommended Arch
Raster IRQ Tile Map
Original MOS 6502 Assembly (Atari TIA Scanline)
STA WSYNC ; Wait for Horizontal Blank
LDA #$80 ; Playfield pattern byte
STA PF0 ; Direct TIA register write
LDA #$F0 ; Sprite graphic data
STA PF1 ; Mid-scanline beam update
STA RESP0 ; Reset Player 0 position
STA COLUP0 ; Set Player color
LDA #$80 ; Playfield pattern byte
STA PF0 ; Direct TIA register write
LDA #$F0 ; Sprite graphic data
STA PF1 ; Mid-scanline beam update
STA RESP0 ; Reset Player 0 position
STA COLUP0 ; Set Player color
AI Direct Translation (MC68000 Target)
; Direct LLM line-by-line translation
MOVE.W #$8000, (VDP_CTRL) ; Set VRAM Addr
MOVE.W #$80, (VDP_DATA) ; Direct write during scan!
MOVE.W #$F0, (VDP_DATA) ; VRAM bandwidth saturated
; ERROR: VRAM writes missed outside H-Blank!
; Screen tearing and tile corruption occurring.
MOVE.W #$8000, (VDP_CTRL) ; Set VRAM Addr
MOVE.W #$80, (VDP_DATA) ; Direct write during scan!
MOVE.W #$F0, (VDP_DATA) ; VRAM bandwidth saturated
; ERROR: VRAM writes missed outside H-Blank!
; Screen tearing and tile corruption occurring.