TK-80BS SD
About the TK-80BS SD PCB
TK-80BS SD is an open source AVR/Arduino PCB design by yanataka60, published on GitHub under the MIT license. It is a 2-layer board measuring 142.5 × 78 mm, with 19 components from 17 distinct parts.
Its main chip is the Arduino_Pro_Mini_5V, from the AVR/Arduino family. Other key parts include the 8080A, 8080A SOCKET, 8228, 8228 SOCKET and GAL22V10. By type, the board carries 10 ICs, 3 switches, 3 capacitors, 2 connectors and 1 speaker.
From the project
ARDUINO+SD-CARDをTK-80BSに接続することでNEC TK-80BS LEVEL2 BASICでSD-CARDとロード、セーブを実現するものです。
ARDUINO+SD-CARDをTK-80BSに接続することでNEC TK-80BS LEVEL2 BASICでSD-CARDとロード、セーブを実現するものです。(LEVEL1 BASICは未所有のため対応していません。)
実現するためにTK-80BS MONITOR、BS MONITOR及びLEVEL2 BASUCへのパッチ当て、SDアクセスルーチンを合わせてROMに焼く必要があります。
パッチを当てたROMを使うのでTK-80のROM D454(D464)×3個、TK-80BSのBS MONITOR 2個、LEVEL2BASIC 1個はすべて引き抜きます。
EXT-BOARD上のSRAM 62256により、A000h～CFFFhまでのRAMが増設されます。また、GAL22V10へ書き込むプログラムを選択することで8000h～81FFhのRAMを増設することも可能です。
Main components on the TK-80BS SD
TK-80BS SD bill of materials (BOM)
19 components, 17 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 8080A | DIP-40_W15.24mm_LongPads | U1 |
| 1 | 8080A SOCKET | DIP-40_W15.24mm_LongPads | U2 |
| 1 | 8228 | DIP-28_W15.24mm_LongPads | U3 |
| 1 | 8228 SOCKET | DIP-28_W15.24mm_LongPads | U4 |
| 1 | GAL22V10 | DIP-24_W7.62mm_LongPads | U5 |
| 1 | 27512 | DIP-28_W15.24mm_LongPads | U6 |
| 1 | HM62256BLP | DIP-28_W15.24mm_LongPads | U7 |
| 1 | 8255 | DIP-40_W15.24mm_LongPads | U8 |
| 1 | 8255 SOCKET | DIP-40_W15.24mm_LongPads | U9 |
| 1 | Arduino_Pro_Mini_5V | Arduino_Pro_Mini | U10 |
| 1 | Micro_SD_Card_Kit | AE-microSD-LLCNV | J1 |
| 1 | MicroSD Card Adapter | PinSocket_1x06_P2.54mm_Vertical | J2 |
| 1 | Speaker | PinHeader_1x02_P2.54mm_Vertical | LS1 |
| 1 | 27512/2764,27256 | PinHeader_1x03_P2.54mm_Vertical | S1 |
| 1 | 27512,27256/2764 | PinHeader_1x03_P2.54mm_Vertical | S2 |
| 1 | 2764,27256,27512/2732 | PinHeader_1x03_P2.54mm_Vertical | S3 |
| 3 | 0.1uF | C_Rect_L4.0mm_W2.5mm_P2.50mm | C1, C2, C3 |
TK-80BS SD design files
The KiCad project lives in the yanataka60/TK-80BS_SD repository on GitHub; these links point at the commit this page was built from.
TK-80BS SD: common questions
What microcontroller does the TK-80BS SD use?
The TK-80BS SD is built around the Arduino_Pro_Mini_5V, from the AVR/Arduino family.
How big is the TK-80BS SD PCB?
The TK-80BS SD measures 142.5 × 78 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the TK-80BS SD?
19 components, from 17 distinct parts. The full bill of materials is listed on this page.
Where can I download the TK-80BS SD design files?
From the yanataka60/TK-80BS_SD repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the TK-80BS SD design in my own project?
Yes, under the terms of its MIT license, which yanataka60 chose for the repository.
Can I test firmware for the TK-80BS SD without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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