2 layers94.9 × 50 mm
Vic20 FlashCart
dgaunt48/CBM_Flash_ROMs
Various Commodore Cartridge and ROM replacement stuff.
46 parts
2 layers100 × 100 mm
FlashCartProgrammer
dgaunt48/CBM_Flash_ROMsVarious Commodore Cartridge and ROM replacement stuff.
- Size
- 100 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 83
- Nets
- 165
- Pads
- 547
- Tracks, vias
- 1,863, 341
- Pours
- 855
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 27 Jan 2026
- Updated
- 29 Aug 2026
Overview
FlashCartProgrammer is an open-source printed circuit board by dgaunt48, from the dgaunt48/CBM_Flash_ROMs repository on GitHub. It is a 2-layer board of 100 × 100 mm with 83 parts on 165 nets, routed with 1,863 tracks and 341 vias.
It is built around the 74LS245SC, W25Q16JVSSIQ and DM3D-SF, with the 74LS573PC, TXS0108EPW and TLV74333PDBVR-TP among its other parts. Its parts include 30 capacitors, 26 resistors, 11 connectors, 10 ICs and 1 diode. It belongs with the retro computing and games boards and the RP2350 boards of this library.
Main components
774LS245SC
-0℃~+70℃ 12ns@5V,45pF 15mA 24mA 4.75V~5.25V 74LS 8 Bidirectional Output enable Schmitt trigger Tri-State - Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
W25Q16JVSSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 10uA 133MHz 16Mbit 2.7V~3.6V 20 Years 3ms SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
DM3D-SF
SMD-25℃~+85℃ 1.55mm Connector and Ejector MicroSD Card (TF Card) No Push-Pull SMD SD Card / Memory Card Connector ROHSHirose ElectricSD Card / Memory Card Connector
74LS573PC
DIP-200℃~+70℃ 10ns 3ns 4.75V~5.25V 74LS 8 D Latch Tri-State DIP-20 Latches ROHSTexas InstrumentsLatches
TXS0108EPW
TSSOP-20-40℃~+85℃ 1 1.4V~3.6V 1.65V~5.5V 60Mbps 8 Automatic direction detection、Output enable high-impedance、Integrated pull-up resistor Bidirectional Level translator Push-Pull、Open-drain TSSOP-20 Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level Shifters
TLV74333PDBVR-TP
SOT-23-5-40℃~+85℃ 1 110mV@(100mA) 150mA、350mA 70dB@(1kHz) 7V 800nA Over Current Protection、Enable、Short Circuit Protection SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICUncategorised
B140-E3
SMA(DO-214AC)-65℃~+150℃ 1 Independent 1A 200uA@40V 30A 40V 520mV@1A SMA(DO-214AC) Schottky Diodes ROHSVishay IntertechnologySchottky Diodes
README
README.mdCBM_Flash_ROMs
Various Commodore Cartridge and ROM replacement projects.
16BitFlashROM_Adaptor
Simple adaptor to use a 48 pin SMD flash rom in place of the AMIGA 500 dip rom. Extra address pins on top to allow selection from multiple rom images. link to ibom
C64_FlashCart
Flash cartridge for the C64
FlashCartProgrammer
Flash Cart Programmer with sockets for VIC20 & C64 cartridges plus pin header for programming of my 16Bit Flash ROM Adaptor board. link to ibom
FlashSPI
Raspberry PI Pico code used to program the SPI Flash ROM on my FPGA boards.
Vic20_DiagROM
Dissassembly of vc-20-diag.324173-01_blk5.bin. Source file now assembles back into an identical image of the original Diag ROM file.
Vic20_FlashCart
Vic20 Ram Expansion and Multi ROM Image Flash Cartridge. link to ibom
Parts
83| Qty | Value | Footprint | References |
|---|---|---|---|
| 23 | 100nf | Capacitor_SMD:C_0603_1608Metric | C3, C10, C11, C12, C13, C14, C16, C17, C19, C20, C24, C25, C26, C27, C28, C29 +7 |
| 12 | 10k | Resistor_SMD:R_0603_1608Metric | R11, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25, R26 |
| 8 | 27R | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4, R5, R7, R8, R9 |
| 4 | 4.7uf | Capacitor_SMD:C_0603_1608Metric | C1, C2, C18, C21 |
| 3 | 330R | Resistor_SMD:R_0603_1608Metric | R10, R12, R14 |
| 3 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1, TP2, TP3 |
| 2 | 10pf | Capacitor_SMD:C_0603_1608Metric | C22, C23 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric | R6, R15 |
| 2 | 74LS573 | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U5, U6 |
| 2 | TXS0108EPW | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U7, U8 |
| 1 | +5V | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J3 |
| 1 | 12MHz | Crystal:Crystal_SMD_SeikoEpson_FA238V-4Pin_3.2x2.5mm | Y1 |
| 1 | 27C400 | _Custom:ZIF-40_W11.9_W12.7_W15.24_W17.78_W18.5_3M_240-1280-00-0602J | U10 |
| 1 | 2k2 | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | 470uf | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C6 |
| 1 | 74LS245 | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U18 |
| 1 | B140-E3 | Diode_SMD:D_SOD-123 | D1 |
| 1 | BOOT SEL | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J5 |
| 1 | C64 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J9 |
| 1 | DE15_Socket_HighDensity_MountingHoles | _Custom:DSUB-15 | J6 |
| 1 | DM3D-SF | _Custom:DM3DSF_SDCard | J7 |
| 1 | POWER | LED_SMD:LED_0805_2012Metric | Power1 |
| 1 | RP2354B-QFN80 | RP2350_KiCad-main:RP2350B_QFN-80_EP_10.573x10.573_Pitch0.4mm | U4 |
| 1 | SWD | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J8 |
| 1 | TLV74311PDBVR | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | TLV74333PDBVR | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | USB_A_KeyBoard | _Custom:USB_A | J4 |
| 1 | Vic20 | Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Vertical | J10 |
| 1 | Vic20_Cartridge_Connector | _Custom:Vic20-Cartridge-Connector | J1 |
| 1 | W25Q16JVSSIQ | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U3 |
| 1 | ZIF | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J11 |
| 1 | c64-Cartridge-Connector | _Custom:c64-Cartridge-Connector | J2 |
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Questions
How big is the FlashCartProgrammer PCB?
It measures 100 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the FlashCartProgrammer use?
83 parts, built around the 74LS245SC, W25Q16JVSSIQ, DM3D-SF and 74LS573PC. 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 FlashCartProgrammer KiCad files?
From the dgaunt48/CBM_Flash_ROMs repository on GitHub, at the commit this page was made from: the board is FlashCartProgrammer/KiCad/FlashCartProgrammer.kicad_pcb and its schematic 16BitFlashROM_Adaptor/KiCad/16BitFlashROM_Adaptor.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the FlashCartProgrammer design in my own project?
Its repository states no licence, so its author keeps all rights: ask dgaunt48 before reusing the design.