MSX-1 Hardware

Baffa-2 is an educational project that allows the learning of computer hardware from the 8-bit computer designs widely used in the 1980s.

It started as a CP/M Z80 machine on Grant Searle's "CP/M on breadboard" and also as an emulator I wrote to run the original files (ROM and CP/M) but grew into many other projects

More info about Baffa-2 project.

Default Features:

CPU: Z80 running at 3.6864 MHz
PPI: 8255
VDP: TMS9918 with 32KB Ram
PSG: AY8912
RAM: 64K Bytes
ROM: 32K Bytes
Disk: Beer IDE Interface
Serial: 16550 via Wifi

More info about...

Baffa-2 PCBs

MSX-1 Kit

MSX-1 Setup

Backplane Bus Pin Assignments for this project

Pin	Signal	Pin	Signal
1	A0	31	D4
2	A1	32	D5
3	A2	33	D6
4	A3	34	D7
5	A4	35	TX
6	A5	36	RX
7	A6	37	-
8	A7	38	!RESET
9	A8	39	GND
10	A9	40	VCC
11	A10	41	!RFSH
12	A11	42	!RESET2
13	A12	43	CLK2
14	A13	44	!BUSACK
15	A14	45	!HALT
16	A15	46	!BUSRQ
17	-	47	!WAIT
18	-	48	!NMI
19	!M1	49	!CS1
20	-	50	!CS2
21	CLK	51	!CS12
22	!INT	52	!SLT0
23	!MREQ	53	!SLT1
24	!WD	54	!SLT2
25	!RD	55	!SLT3
26	!IORQ	56	SW1
27	D0	57	TX2
28	D1	58	RX2
29	D2	59	!BDIR
30	D3	60	SOUNDIN

Baffa-2 Boards - MSX 1 Compatible Computer

Baffa-X is a project to turn Baffa-2 into a MSX-1 Computer. It's based on Brazilian Sharp's HB-8000 (Hotbit) schematics and Beer 202 IDE Board. The projects also uses original Z80 CPU, 64KB RAM and TMS9918 Boards from Baffa-2.

More info about Baffa-X.

TMS9918 Videoboard

MSX Soundboard / Joystick

MSX IDE

Serial 16550

MSX Printer Port

MSX Cartridge Slots