MSX-2+ 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: v9958 with 128KB Ram
PSG: AY8912 + FM YM2413
RAM: 1M Bytes
ROM: 32K Bytes (main) + 32K Bytes (subrom)
Disk: Sunrise IDE Interface
RTC: RP5C01A
Serial: 16550 via Wifi

More info about...

Baffa-2 PCBs

MSX-2+ Kit

MSX-2+ 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 2+ Compatible Computer

Why have just a MSX-1 when I can keep upgrading it? :D - Baffa-X2 is a project to upgrade Baffa-X into a MSX-2+ Computer.

More info about Baffa-X.

Full Backplane Rev.4

Z80 CPU Rev.0 Wait

Dual Clock Rev.1

MSX PPI / ROM Rev.1

MSX Slot Expander / Subroms

MSX 1MB RAM

v9958 Videoboard

MSX Soundboard / Joystick

MSX FMSound YM2413

MSX Real-Time Clock

MSX Sunrise IDE

MSX Printer Port

MSX Cartridge Slots