Tandy-EX-HX-3in1
About the Tandy-EX-HX-3in1 PCB
Tandy-EX-HX-3in1 is an open source PCB design by rkrenicki, published on GitHub. It is a 2-layer board measuring 125 × 98 mm, with 39 components from 18 distinct parts.
By type, the board carries 16 capacitors and 4 resistors.
From the project
This is a single expansion board designed for the Tandy 1000 EX and HX computers, to include the following upgrades:
This is a single expansion board designed for the Tandy 1000 EX and HX computers, to include the following upgrades:
640KB Base System Memory 96KB Upper Memory 16550-based DE9 Serial RS232 Port XT-IDE based CompactFlash "Hard Drive"
This board is for the Tandy 1000EX and 1000HX computers only. It will not work in any other computer model as it is. You must remove any expansion cards already in the computer, this is designed to be a single-board upgrade and has no provisions to allow for any other expansion cards.
Tandy-EX-HX-3in1 bill of materials (BOM)
39 components, 18 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1.8432MHz | Oscillator_DIP-8 | 232-OSC1 |
| 1 | GD75232 | DIP-20_W7.62mm | 232-U6 |
| 2 | 74ALS138 | DIP-16_W7.62mm | 232-U7, 232-U9 |
| 1 | 16C550 | PLCC-44_THT-Socket | 232-U8 |
| 1 | TANDY_BUS | TANDY-PLUS-BUS | BUS1 |
| 1 | CF Interface | PinSocket_2x20_P2.54mm_Vertical | CF-J1 |
| 1 | CF Power | PinSocket_1x02_P2.54mm_Vertical | CF-J2 |
| 1 | 74LS139 | DIP-16_W7.62mm | CF-U1 |
| 2 | 74LS688 | DIP-20_W7.62mm | CF-U2, ROM-U4 |
| 2 | 74LS245 | DIP-20_W7.62mm | CF-U3, RAM-U11 |
| 1 | 100uF | CP_Radial_D5.0mm_P2.50mm | CP1 |
| 1 | AS6C4008-55PCN | DIP-32_W15.24mm | RAM-U10 |
| 1 | 74LS00 | DIP-14_W7.62mm | RAM-U12 |
| 1 | 74LS32 | DIP-14_W7.62mm | RAM-U13 |
| 1 | ROM Write Enable | PinHeader_1x02_P2.54mm_Vertical | ROM-JP1 |
| 1 | 28C64 | DIP-28_W15.24mm | ROM-U5 |
| 16 | 0.1uF | C_Disc_D3.0mm_W2.0mm_P2.50mm | C1, C2, C3, C4, C5, C6, C7, C8 +8 |
| 4 | 10K | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1, R2, R3, R4 |
Tandy-EX-HX-3in1 design files
The KiCad project lives in the rkrenicki/Tandy-EX-HX-3in1 repository on GitHub; these links point at the commit this page was built from.
- Layout3-in-1.kicad_pcb
- Schematic3-in-1.kicad_sch
Tandy-EX-HX-3in1: common questions
How big is the Tandy-EX-HX-3in1 PCB?
The Tandy-EX-HX-3in1 measures 125 × 98 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Tandy-EX-HX-3in1?
39 components, from 18 distinct parts. The full bill of materials is listed on this page.
Where can I download the Tandy-EX-HX-3in1 design files?
From the rkrenicki/Tandy-EX-HX-3in1 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Tandy-EX-HX-3in1 design in my own project?
The repository has no license, so all rights stay with rkrenicki. Use it as a reference, and ask the author before reusing the design.