HardLabs

MMU v1

roberto314·Unicomp3·MMU_Board/schematics/MMU_v1/MMU_v1.kicad_pcb

MMU v1 PCB layout, top view — open source board by roberto314

About the MMU v1 PCB

MMU v1 is an open source PCB design by roberto314, published on GitHub under the BSD-2-Clause license. It is a 2-layer board measuring 100 × 100 mm, with 79 components from 57 distinct parts.

Other key parts include the XC9572VQ44, XC9572XL-VQ64 and 74LVC125. By type, the board carries 62 connectors, 7 capacitors, 7 resistors and 3 ICs.

It belongs with the retro computing and usb & debug tools designs in this gallery.

From the project

A modular 8-bit Computer able to recreate (nearly) every Retro computer of the late 70s to mid 80s.

A modular 8-bit Computer able to recreate (nearly) every microcomputer of the mid 70s to early 80s in Hardware without FPGAs (although an FPGA can be added). Can also be used as a teaching tool for:

VHDL or Verilog C RTOS (STM32F401 runs ChibiOS. Link: https://www.chibios.org) Python bash and linux in general (Olimex board runs linux with fbterm and tmux) Harwaredesign Timing of CPUs maybe Assembler SPI and I2C Interfaces CPLDs and FPGAs

Main components on the MMU v1

XC9572VQ44XC9572XL-VQ6474LVC125

MMU v1 bill of materials (BOM)

79 components, 57 distinct parts.

QtyPartRefs
1
XC9572VQ44
U1
1
XC9572XL-VQ64
U2
1
74LVC125
U3
2
RAM
J1, J27
1
BUS
J2
1
Mezzanine
J3
1
Spare
J4
1
CPU
J5
6
Conn_01x01
J6, J7, J19, J29, J32, J33
1
PH1
J8
1
IORD
J9
1
MRD
J10
1
IOWR
J11
1
PH2
J12
1
R/W
J13
1
MWR
J14
2
.
J15, J16
1
Conn_01x11
J17
1
Conn_01x13
J18
1
Conn_01x10
J20
Show 37 more
QtyPartRefs
2
Conn_01x09
J21, J24
2
JTAG
J22, J25
2
Conn_01x08
J23, J26
1
Extern
J28
2
Conn_02x02_Odd_Even
J30, J31
1
Spare
J34
1
D0
J39
1
D2
J41
1
D4
J43
1
D6
J44
1
D1
J52
1
D3
J55
1
D5
J56
1
D7
J62
1
A0
J63
1
A2
J66
1
A4
J69
1
A6
J70
1
A8
J75
1
A10
J76
1
A12
J77
1
A14
J78
1
A1
J79
1
A16
J82
1
A18
J83
1
A3
J84
1
A5
J85
1
A7
J86
1
A9
J91
1
A11
J92
1
A13
J93
1
A15
J94
1
A17
J99
1
A19
J100
7
100n
C1, C2, C3, C4, C8, C9, C10
6
1k
R1, R2, R3, R4, R6, R7
1
1k
RN1

MMU v1 design files

The KiCad project lives in the roberto314/Unicomp3 repository on GitHub; these links point at the commit this page was built from.

MMU v1: common questions

How big is the MMU v1 PCB?

The MMU v1 measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the MMU v1?

79 components, from 57 distinct parts. The full bill of materials is listed on this page.

Where can I download the MMU v1 design files?

From the roberto314/Unicomp3 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the MMU v1 design in my own project?

Yes, under the terms of its BSD-2-Clause license, which roberto314 chose for the repository.

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