ROM LOADER
Upload the four Space Invaders ROM files (2KB each)
invaders.h 0x0000–0x07FF
⬜
Drop file or click
invaders.g 0x0800–0x0FFF
⬜
Drop file or click
invaders.f 0x1000–0x17FF
⬜
Drop file or click
invaders.e 0x1800–0x1FFF
⬜
Drop file or click
🔊 Audio requires user interaction — click START to enable the SN76477 sound chip
FPS: --
Speed: 1x
CPU: 2.00 MHz
Audio: --
KEYBOARD
A/← Left
D/→ Right
W/↑/Space Fire
C Coin
1 1P Start
2 2P Start
P Pause
M Mute
SETTINGS
SN76477 COMPLEX SOUND GENERATOR
Circuit-Accurate Emulation — Midway PCB 0610-01261-00
— STANDBY
ON
70%
UFO
SHOT
P.DIE
I.DIE
FLEET
UFO.H
AUDIO OUTPUT
SN76477 CHIP INTERNALS (Pin-Accurate)
TI SN76477N — PCB 0610-01261-00
VCO (Pin 20-22)
-- Hz
R=100kΩ C=0.022µF
OFF
SLF (Pin 7-8)
-- Hz
R=100kΩ C=0.0022µF
OFF
NOISE (17-bit LFSR)
-- Hz
x¹⁷+x¹⁴+1 (Pin 4)
OFF
ONE-SHOT (Pin 10-11)
R=100kΩ C=1µF → 80ms
ENVELOPE (Pin 15-19)
IDLE
Atk=10kΩ Dec=100kΩ
MIXER (Pin 12-14)
A:0 B:0 C:0
Mode: --
INHIBIT (Pin 6)
OFF
FEEDBACK (Pin 26)
47kΩ + 0.01µF
SOUND TOGGLES
DEBUG / CPU STATE
Registers loading...
☢️ MEMORY CORRUPTOR
Inject chaos into RAM. Higher = more glitchy.