SPD1x
STOPPED
ROM FILES
📂 DROP ROM FILES HERE
or click to browse • any file extension accepted
| Status | File | Address | Size |
|---|---|---|---|
| ❌ | BASUK01.ROM | $A000-$A7FF | 2048 bytes |
| ❌ | BASUK02.ROM | $A800-$AFFF | 2048 bytes |
| ❌ | BASUK03.ROM | $B000-$B7FF | 2048 bytes |
| ❌ | BASUK04.ROM | $B800-$BFFF | 2048 bytes |
Load all 4 BASIC ROMs to boot
DEMO PROGRAMS
Or paste BASIC code:
Ctrl+Enter to send
KEYBOARD
Type directly when emulator is running. Keys are mapped through the UK101 keyboard matrix and ACIA. All letters are automatically converted to UPPERCASE as on the original machine.
Q
W
E
R
T
Y
U
I
O
P
A
S
D
F
G
H
J
K
L
RET
ABOUT
This emulator implements a MOS 6502 CPU with all official opcodes, memory-mapped video (0xD000-0xD2FF), ACIA serial interface (0xF000-0xF001), keyboard matrix (0xDF00), and AY-3-8910 sound chip emulation via Web Audio API. Upload the four BASUK01-04.ROM files to run Microsoft BASIC.
CPU: 6502PSG: AY-3-8910VIDEO: 48×16