2 layers234 × 100 mm
V2b
KITTY-6502/hardware
the KITTY is a 65c02 homebrew kit microcomputer designed around text mode graphics and cartridge media. It is fully open source, and uses exclusively in-production parts.
147 parts
2 layers56.9 × 38.6 mm
the KITTY is a 65c02 homebrew kit microcomputer designed around text mode graphics and cartridge media. It is fully open source, and uses exclusively in-production parts.
- Size
- 56.9 × 38.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 8
- Nets
- 45
- Pads
- 90
- Tracks, vias
- 277, 89
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 12 Jan 2024
- Updated
- 18 Jan 2025
Overview
V1a is an open-source printed circuit board by KITTY-6502, from the KITTY-6502/hardware repository on GitHub. It is a 2-layer board of 56.9 × 38.6 mm with 8 parts on 45 nets, routed with 277 tracks and 89 vias.
It is built around the AS6C4008-55PCN. Its parts include 2 diodes, 1 capacitor, 1 resistor, 1 IC and 1 connector.
Main components
1README
README.mdKITTY Computer
the KITTY is a 65c02 homebrew kit microcomputer designed around text mode graphics and cartridge media. It is fully open source, and uses exclusively in-production parts.
Quick Specs:
- Bus Speed: 3Mhz
- CPU:* w65c02s @~2.2Mhz (average)
- RAM: 28Kb SRAM
- Video: Custom, 256x256pixels, a text mode display using a preset font, 32x32 8x8 pixel characters, 16 color palette
- Sound: Custom, 8x1 Wavetable Audio, 3 melodic + 1 percussive channels, all with 4bit+4bit stereo volume control.
- Input: 40-Key Mechanical Keyboard
- Media/Expansion: 2 Cartridge Slots, each with up to 128x32Kb banks.
- Interrupts: /IRQ triggered when the video circuit has drawn the last visible pixels on the frame.
- Output: RGB PAL (50hz), via a SCART connector.
Parts
8| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2 |
| 1 | 100nF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C1 |
| 1 | 10KΩ | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1 |
| 1 | 512/128 | Jumper:SolderJumper-3_P1.3mm_Open_Pad1.0x1.5mm | JP1 |
| 1 | AS6C4008-55PCN | PCM_Package_DIP_AKL:DIP-32_W15.24mm_Socket | U1 |
| 1 | Conn_02x22_Odd_Even | Smal:KITTY_Cart_Edge | J1 |
| 1 | slot 1 | Jumper:SolderJumper-3_P1.3mm_Open_Pad1.0x1.5mm | JP2 |
More from KITTY-6502/hardware
9- 2 layers234 × 100 mm
V1c
KITTY-6502/hardware
the KITTY is a 65c02 homebrew kit microcomputer designed around text mode graphics and cartridge media. It is fully open source, and uses exclusively in-production parts.
145 parts - 2 layers234 × 87.3 mm
V1a
KITTY-6502/hardware
the KITTY is a 65c02 homebrew kit microcomputer designed around text mode graphics and cartridge media. It is fully open source, and uses exclusively in-production parts.
134 parts - 2 layers234 × 87.3 mm
V0c
KITTY-6502/hardware
the KITTY is a 65c02 homebrew kit microcomputer designed around text mode graphics and cartridge media. It is fully open source, and uses exclusively in-production parts.
123 parts - 2 layers240.3 × 76 mm
Keyboard
KITTY-6502/hardware
the KITTY is a 65c02 homebrew kit microcomputer designed around text mode graphics and cartridge media. It is fully open source, and uses exclusively in-production parts.
84 parts - 2 layers56.9 × 38.6 mm
V1a
KITTY-6502/hardware
the KITTY is a 65c02 homebrew kit microcomputer designed around text mode graphics and cartridge media. It is fully open source, and uses exclusively in-production parts.
11 parts - 2 layers58.4 × 40 mm
V2a
KITTY-6502/hardware
the KITTY is a 65c02 homebrew kit microcomputer designed around text mode graphics and cartridge media. It is fully open source, and uses exclusively in-production parts.
7 parts - 2 layers56.9 × 38.6 mm
V1a
KITTY-6502/hardware
the KITTY is a 65c02 homebrew kit microcomputer designed around text mode graphics and cartridge media. It is fully open source, and uses exclusively in-production parts.
6 parts - 2 layers58.4 × 40 mm
V2a
KITTY-6502/hardware
the KITTY is a 65c02 homebrew kit microcomputer designed around text mode graphics and cartridge media. It is fully open source, and uses exclusively in-production parts.
4 parts
Similar boards
- 2 layers125 × 98 mm
3-in-1
mudmin/AnotherMaker
This is where I will store code snippets for AnotherMaker Videos
44 parts258 - 4 layers160 × 100 mm
Rosco m68k
rosco-m68k/rosco_m68k
Design, documentation and software for the Really Old School Computer (M68K)
140 parts200 - 2 layers213 × 65.1 mm
- 4 layers215 × 150 mm
Mackerel-30-proto
crmaykish/mackerel-68k
A series of single-board Motorola 68k computers with support for modern Linux
133 parts96MIT - 4 layers100 × 100 mm
- 4 layers101.6 × 53.3 mm
- 2 layers176.5 × 85.1 mm
- 4 layers170.1 × 170.1 mm
Questions
How big is the V1a PCB?
It measures 56.9 × 38.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the V1a use?
8 parts, built around the AS6C4008-55PCN. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the V1a KiCad files?
From the KITTY-6502/hardware repository on GitHub, at the commit this page was made from: the board is Kicad/ramcart/v1a/v1a.kicad_pcb and its schematic Kicad/case/back/back.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the V1a design in my own project?
Its repository states no licence, so its author keeps all rights: ask KITTY-6502 before reusing the design.