Doscon
About the Doscon PCB
Doscon is an open source PCB design by ikeji, published on GitHub. It is a 2-layer board measuring 108 × 144 mm, with 126 components from 11 distinct parts.
Other key parts include the 8086_MIN_MODE. By type, the board carries 50 switches, 48 diodes, 16 resistors, 11 connectors and 1 IC.
It belongs with the displays & leds designs in this gallery.
From the project
My personal computer project
携帯型 V30 + MS-DOS 互換機。RP2350 (Raspberry Pi Pico 2 系) と単 3 電池 2 本で動く。 V30 命令を core1 で直接エミュレートして HIDOS (MS-DOS 2.11 のカスタマイズ版) を走らせ、ILI9488 LCD と 自作キーボードを端末にする。USB は CDC を 3 本出してホスト PC とも 繋がる。
- arm-none-eabi GCC (for RP2350) ・ CMake ・ Ruby (フォント生成) ・ mtools (FAT イメージ作成) ・ Pico SDK 2.x (PICOSDKPATH)
firmware/Makefile と firmware/CMakeLists.txt がエントリポイント。 追加 DOS ツール (vi / sx / rx / sha1sum 等) は別リポジトリでビルド済み バイナリを embeded-hidos/files/ に置く形で disk image に組み込む。
Main components on the Doscon
Doscon bill of materials (BOM)
126 components, 11 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 8086_MIN_MODE 8086_Min_Mode | DIP-40_W15.24mm | U1 |
| 4 | CONN_02X08_ODD_EVEN Conn_02x08_Odd_Even | PinHeader_2x08_P2.54mm_Vertical | J1, J2, J3, J4 |
| 2 | CONN_01X04 Conn_01x04 | PinHeader_1x04_P2.54mm_Vertical | J5, J8 |
| 3 | CONN_01X03 Conn_01x03 | PinSocket_1x03_P2.54mm_Vertical | J6, J10, J11 |
| 1 | CONN_01X14 Conn_01x14 | PinHeader_1x14_P2.54mm_Vertical | J7 |
| 1 | CONN_01X02 Conn_01x02 | PinSocket_1x02_P2.54mm_Vertical | J9 |
| 48 | SW_Push | silent | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +40 |
| 1 | SW_Push | SW_PUSH_6mm | SW49 |
| 1 | SW_SPDT | SW_Slide_SPDT_Straight_CK_OS102011MS2Q | SW50 |
| 48 | D | D_SOD-123 | D1, D2, D3, D4, D5, D6, D7, D8 +40 |
| 16 | R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4, R5, R6, R7, R8 +8 |
Doscon design files
The KiCad project lives in the ikeji/doscon repository on GitHub; these links point at the commit this page was built from.
Doscon: common questions
How big is the Doscon PCB?
The Doscon measures 108 × 144 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Doscon?
126 components, from 11 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 Doscon design files?
From the ikeji/doscon 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 Doscon design in my own project?
The repository has no license, so all rights stay with ikeji. Use it as a reference, and ask the author before reusing the design.
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