Retro stack debug
About the Retro stack debug PCB
Retro stack debug is an open source PCB design by gcoonrod, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 99.1 × 99.1 mm, with 35 components from 11 distinct parts.
Other key parts include the 74HC244 and 74HC240. By type, the board carries 17 diodes, 6 resistors, 4 ICs, 4 capacitors, 3 connectors and 1 switch.
It belongs with the retro computing designs in this gallery.
From the project
A retro computer project based on stackable PCB boards.
This module provides a 40 pin IDC connection for use with an external debugging tool/circuit. In addition, all of the Address and Data signals and most of the control signals are routed through buffers to drive LEDs. The buffers can be disabled by the Display switch in the upper left when operating at higher speeds.
Main components on the Retro stack debug
Retro stack debug bill of materials (BOM)
35 components, 11 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 74HC244 | DIP-20_W7.62mm_LongPads | U1, U2, U3 |
| 1 | 74HC240 | DIP-20_W7.62mm_LongPads | U4 |
| 1 | BUS_6502 | PinSocket_2x20_P2.54mm_Vertical | J1 |
| 1 | TRM_PWR | TerminalBlock_Phoenix_MPT-0,5-2-2.54_1x02_P2.54mm_Horizontal | J2 |
| 1 | BUS_6502 | IDC-Header_2x20_P2.54mm_Vertical | J3 |
| 1 | SW_ENABLE | LC1258EENP1RLGR | SW1 |
| 1 | LED_PWR | LED_D5.0mm | D1 |
| 16 | 553-0121F | 5530121F | D2, D3, D4, D5, D6, D7, D8, D9 +8 |
| 4 | 0u1 | C_Disc_D3.0mm_W2.0mm_P2.50mm | C1, C2, C3, C4 |
| 2 | 1k | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1, R2 |
| 4 | 1k | R_Array_SIP9 | RN1, RN2, RN3, RN4 |
Retro stack debug design files
The KiCad project lives in the gcoonrod/retro-stack repository on GitHub; these links point at the commit this page was built from.
Retro stack debug: common questions
How big is the Retro stack debug PCB?
The Retro stack debug measures 99.1 × 99.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Retro stack debug?
35 components, from 11 distinct parts. The full bill of materials is listed on this page.
Where can I download the Retro stack debug design files?
From the gcoonrod/retro-stack repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Retro stack debug design in my own project?
Yes, under the terms of its Apache-2.0 license, which gcoonrod chose for the repository.
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