MiniNDP 512 Breadboard
MiniNDP 512 Breadboard is an open source PCB design by bkw777: a 2-layer, 157.5 × 55.9 mm board with 9 components (7 distinct parts). It is built around the HC161, HC138, HC574, AS6C4008-55STIN and more. Filed under dev boards & breakouts.
Reproduction & documentation of Node Systems DATAPAC
This repo documents the NODE Systems DATAPAC, rampac, and a new clone, the MiniNDP.
The NODE Systems DATAPAC/rampac was a popular ram disk peripheral for TRS-80 / TANDY Models 100, 102, & 200 computers.
The schematic and PCB below documents the DATAPAC.
rampac is a smaller later version of the same device that uses fewer larger sram chips and replaces most of the discrete logic IC's with a single PLD, but functions exactly the same.
Built around
Parts list
9 components, 7 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | HC161 | DIP-16_W7.62mm | U1, U2, U3 |
| 1 | HC138 | DIP-16_W7.62mm | U4 |
| 1 | HC574 HC374 | DIP-20_W7.62mm | U5 |
| 1 | AS6C4008-55STIN AS6C4008 | DIP-32_W15.24mm | U6 |
| 1 | 1G32 HC32 | DIP-14_W7.62mm | U7 |
| 1 | 1G79 HC374 | DIP-20_W7.62mm | U8 |
| 1 | 302-S401 Conn_02x20_Odd_Even | IDC-Header_2x20_P2.54mm_Vertical | J1 |
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