HardLabs

Homebrew 65c02 Computer

snorklerjoe·useful6502·kicad_project/Homebrew6502Project/Homebrew6502Project.kicad_pcb

Homebrew 65c02 Computer PCB layout, top view — open source PIC board by snorklerjoe

About the Homebrew 65c02 Computer PCB

Homebrew 65c02 Computer is an open source PIC PCB design by snorklerjoe, published on GitHub under the MIT license. It is a 4-layer board measuring 127.6 × 98 mm, with 252 components from 65 distinct parts.

Its main chip is the PIC16F15385-xPT, from the PIC family. Other key parts include the 74HC04, 74HC74, W65C02SxPL, CD74HC4002M96 and SN74LS07. By type, the board carries 90 resistors, 80 capacitors, 40 ICs, 17 connectors, 14 jumpers and 7 diodes.

It belongs with the retro computing designs in this gallery.

From the project

A homebrew 65c02s-based computer and custom operating system, with a handful of modern features.

The goal of this project is to build a 6502-based portable machine, running my own operating system.

See the complete implementation plan and progress here: Implemementation Plan

PCB assembled, PIC is able to load code for the 6502 to execute, the 6502 can read/write to the 2-port SRAM.

These are some general points; for the full hardware specification, see here: Hardware Specification

Homebrew 65c02 Computer, from the project README
From the project README

Main components on the Homebrew 65c02 Computer

74HC0474HC74W65C02SxPLCD74HC4002M96SN74LS0774AHC2G00W65C22SxPL74AHC08D-Q100JSN74CBT3245CDBRCY7C146-25JCPIC16F15385-xPT74HCT125DM95512-Axxx-MFLD1117STRLD1117S33TR_SOT22374HC73D74AHC2G32DP74ACT139SN74ABT574APWR74HC59574HC193

Homebrew 65c02 Computer bill of materials (BOM)

252 components, 65 distinct parts.

QtyPartRefs
3
74HC04
U101, U109, U1002
2
74HC74
U102, U103
1
W65C02SxPL
U104
4
CD74HC4002M96
U105, U507, U704, U705
2
SN74LS07
U106, U201
4
74AHC2G00
U107, U503, U701, U702
1
W65C22SxPL
U108
3
74AHC08D-Q100J
U110, U703, U706
2
SN74CBT3245CDBR
U111, U112
1
CY7C146-25JC
U202
1
PIC16F15385-xPT
U203
1
74HCT125D
U401
1
M95512-Axxx-MF
U402
1
LD1117STR
U501
1
LD1117S33TR_SOT223
U502
1
74HC73D
U505
2
74AHC2G32DP
U508, U510
2
74ACT139
U801, U1001
5
SN74ABT574APWR
U802, U803, U804, U805, U806
1
74HC595
U1003
Show 45 more
QtyPartRefs
1
74HC193
U1004
1
2N7002K
Q1001
1
NOPOP
Y201
2
Conn_02x02_Odd_Even
J101, J104
1
ICSP Header
J201
4
Conn_02x05_Odd_Even
J202, J203, J205, J206
1
I2C
J204
1
UART
J210
2
Conn_02x16_Odd_Even
J301, J302
1
Micro_SD_Card
J402
1
Conn_02x03_Odd_Even
J403
1
+5VDC
J501
1
Parallel LCD
J1001
1
LCD_ENs
J1002
1
KMDGX-6S-BS
J1006
4
Jumper_2_Small_Bridged
JP101, JP109, JP201, JP901
2
Jumper_2_Small_Open
JP202, JP801
1
ICSP modeset
JP203
1
BS_CTRL
JP204
1
BS_CTRL2
JP205
1
OE_CTRL
JP206
1
RW_CTRL
JP207
1
CE_CTRL
JP208
2
Jumper_2_Bridged
JP1001, JP1005
1
300
RV501
1
10k
RV1001
7
LED
D101, D401, D501, D502, D503, D601, D901
17
.01u
C101, C103, C202, C205, C209, C213, C216, C217 +9
22
.1u
C102, C104, C105, C106, C208, C215, C218, C402 +14
1
4.7u
C201
2
NOPOP
C203, C204
16
0.1u
C206, C211, C508, C509, C512, C513, C515, C517 +8
9
1u
C207, C210, C212, C214, C401, C403, C603, C604 +1
2
100n
C501, C502
11
10u
C503, C504, C505, C506, C507, C510, C511, C523 +3
23
10k
R101, R102, R103, R104, R105, R107, R216, R217 +15
37
33
R106, R108, R109, R110, R111, R112, R113, R114 +29
2
510
R134, R504
3
NOPOP
R201, R202, R203
5
4.7k
R204, R215, R219, R220, R221
4
100
R213, R214, R218, R505
8
0
R301, R302, R303, R304, R305, R306, R307, R308
5
470
R405, R501, R502, R601, R901
1
120
R503
2
1
R506, R507

Homebrew 65c02 Computer design files

The KiCad project lives in the snorklerjoe/useful6502 repository on GitHub; these links point at the commit this page was built from.

Homebrew 65c02 Computer: common questions

What microcontroller does the Homebrew 65c02 Computer use?

The Homebrew 65c02 Computer is built around the PIC16F15385-xPT, from the PIC family.

How big is the Homebrew 65c02 Computer PCB?

The Homebrew 65c02 Computer measures 127.6 × 98 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Homebrew 65c02 Computer?

252 components, from 65 distinct parts. The full bill of materials is listed on this page.

Where can I download the Homebrew 65c02 Computer design files?

From the snorklerjoe/useful6502 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Homebrew 65c02 Computer design in my own project?

Yes, under the terms of its MIT license, which snorklerjoe chose for the repository.

Can I test firmware for the Homebrew 65c02 Computer without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug PIC firmware against it before you order a PCB.

More boards in useful6502

Similar boards