2 layers407 × 184 mm
TRS-80-Model I G E1
RetroStack/TRS-80-Model-I-G-E1
Hardware Replica of the TRS-80 Model I Revision G
230 parts57MIT
2 layers58.3 × 49.9 mm
MagicDeskCart
hackup/MagicDeskCart18A bank-switching cartridge for the C64/C128 with up to 256kB of ROM.
- Size
- 58.3 × 49.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 8
- Nets
- 37
- Pads
- 119
- Tracks, vias
- 250, 34
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 13 May 2019
- Updated
- 11 Dec 2020
Overview
MagicDeskCart is an open-source printed circuit board by hackup, from the hackup/MagicDeskCart repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 58.3 × 49.9 mm with 8 parts on 37 nets, routed with 250 tracks and 34 vias.
It is built around the 74LS02PC and 74LS174DC. Its parts include 4 ICs, 1 capacitor and 1 switch. It belongs with the retro computing and games boards of this library.
Main components
2
74LS02PC
DIP-140℃~+70℃ 15ns@5V,15pF 2 2.7V 2V 4 4.75V~5.25V 400uA 500mV 74LS 800mV 8mA 8mA NOR Gate DIP-14 Logic Gates ROHSonsemiLogic Gates
74LS174DC
-0ns 0℃~+70℃ 1 16mA 20ns 30MHz 30ns@5V,15pF 4.75V~5.25V 400uA 6 74LS Series 8mA Asynchronous Push-Pull Reset Rising Edge - Flip Flops ROHSonsemiFlip Flops
README
README.mdMagicDeskCart
The MagicDeskCart is a simple bank switching cartridge for the C64/C128. It is a rendition of a "Magic Desk" compatible layout. There is also no warranty whatsoever. USE AT YOUR OWN RISK!.
WARNING: In revision 1, the jumper labels have been accidentally reversed!
See my blog post for more details.
License
Released under GNU General Public License v3.0, see LICENSE file.
Parts
8| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | 100n | Capacitors_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C1 |
| 1 | 27C020 | Housings_DIP:DIP-32_W15.24mm | U3 |
| 1 | 74LS02 | Housings_DIP:DIP-14_W7.62mm | U2 |
| 1 | 74LS174 | Housings_DIP:DIP-16_W7.62mm | U1 |
| 1 | C64-Exp-Port | MagicDeskCart:C64-Cart-NoSilkS | U4 |
| 1 | LOGO | Logo:bigby2 | G*** |
| 1 | ROM_TYPE | Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm | JP1 |
| 1 | Reset | Buttons_Switches_THT:SW_Tactile_SPST_Angled_PTS645Vx83-2LFS | SW1 |
Questions
How big is the MagicDeskCart PCB?
It measures 58.3 × 49.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MagicDeskCart use?
8 parts, built around the 74LS02PC and 74LS174DC. 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 MagicDeskCart KiCad files?
From the hackup/MagicDeskCart repository on GitHub, at the commit this page was made from: the board is MagicDeskCart.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the MagicDeskCart design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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