MSXgoauldSD tn20k
jabadiagm·MSXgoauldSD_tn20k·kicad/v1_smd/Sombrero_MSX_Goa'uld.kicad_pcb
About the MSXgoauldSD tn20k PCB
MSXgoauldSD tn20k is an open source PCB design by jabadiagm, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 26.7 × 55.3 mm, with 17 components from 9 distinct parts.
Other key parts include the 74HC373PW, SN74LVC245APWR, SN74HC245PWR and TANG_NANO_20K. By type, the board carries 6 ICs, 6 capacitors, 3 resistors, 1 connector and 1 diode.
It belongs with the retro computing designs in this gallery.
From the project
MSX Goa'uld board with Tang Nano 20k and SD support
MSX2+ engine in Z80 socket. It turns one MSX into an MSX2+ by replacing Z80 processor. FPGA in board contains: Z80 V9958 with hdmi output MSX2+ BIOS SD Card support + Nextor 2.1 4MB mapper 2MB megaram SCC RTC PSG OPLL Kanji Level 1 & 2 * Wifi support using ESP (experimental)
For 240p analog video support for consumer CRTs watch DirectVideo branch
Old boards V1.4 and V4.1 are compatible with Goa'uld SD. V3 is not supported, owners of V3 should use Goa'uld standard firmware (0.80).

Main components on the MSXgoauldSD tn20k
MSXgoauldSD tn20k bill of materials (BOM)
17 components, 9 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 74HC373PW | TSSOP-20_4.4x6.5mm_P0.65mm | U1, U2 |
| 2 | SN74LVC245APWR | TSSOP-20_4.4x6.5mm_P0.65mm | U3, U4 |
| 1 | SN74HC245PWR | TSSOP-20_4.4x6.5mm_P0.65mm | U5 |
| 1 | TANG_NANO_20K Tang_Nano_20k | Tang_Nano_20k | U6 |
| 1 | Z80CPU | DIP-40_W15.24mm_Socket | J1 |
| 1 | MBR130T1G | D_SOD-123 | D1 |
| 6 | 100N 100n | C_0805_2012Metric | C1, C2, C3, C4, C5, C6 |
| 1 | 10K | R_0603_1608Metric | R1 |
| 2 | R_PACK04 R_Pack04 | R_Array_Convex_4x0603 | RN1, RN2 |
MSXgoauldSD tn20k design files
The KiCad project lives in the jabadiagm/MSXgoauldSD_tn20k repository on GitHub; these links point at the commit this page was built from.
MSXgoauldSD tn20k: common questions
How big is the MSXgoauldSD tn20k PCB?
The MSXgoauldSD tn20k measures 26.7 × 55.3 mm, has 4 copper layers and is 1.06 mm thick.
How many components are on the MSXgoauldSD tn20k?
17 components, from 9 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the MSXgoauldSD tn20k design files?
From the jabadiagm/MSXgoauldSD_tn20k repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the MSXgoauldSD tn20k design in my own project?
Yes, under the terms of its GPL-3.0 license, which jabadiagm chose for the repository.
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