NODE DATAPAC 256K historical reproduction
NODE DATAPAC 256K historical reproduction is an open source PCB design by bkw777: a 2-layer, 254 × 43.2 mm board with 22 components (19 distinct parts). It is built around the HC161, HC138, HC574, AS6C4008-55STIN and more.
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
22 components, 19 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | HC161 SN74HC161N | DIP-16_W7.62mm | U1, U2, U3 |
| 1 | HC138 SN74HC138N | DIP-16_W7.62mm | U4 |
| 1 | HC574 SN74HC138N | DIP-16_W7.62mm | U5 |
| 1 | AS6C4008-55STIN 74HC374N | DIP-20_W7.62mm | U6 |
| 1 | 1G32 P51256SL-10 | DIP-28_W15.24mm | U7 |
| 1 | 1G79 P51256SL-10 | DIP-28_W15.24mm | U8 |
| 2 | P51256SL-10 | DIP-28_W15.24mm | U9, U10 |
| 1 | 302-S401 Conn_02x20_Odd_Even | IDC_to_board_2x20_flipped | J1 |
| 1 | KEYSTONE_3028 PMB3.6B | PMB3.6B | BT1 |
| 1 | U11_~{CS} | TP_THT_60 | TP1 |
| 1 | U12_~{CS} | TP_THT_60 | TP2 |
| 1 | U13_~{CS} | TP_THT_60 | TP3 |
| 1 | U14_~{CS} | TP_THT_60 | TP4 |
| 1 | VMEM | TP_THT_pwr | TP5 |
| 1 | GND | TP_THT_pwr | TP6 |
| 1 | 1N4148 | D_DO-35_SOD27_P10.16mm_Horizontal | D1 |
| 1 | RK73B2ATTD102J 200 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | RMCF0805FT47K0 5.1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | 240k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3 |
More boards in NODE_DATAPAC
NODE DATAPAC 256K bkw remake
255.3 × 43.2 mm28 parts2LCustom license7
MiniNDP
60 × 34 mm18 parts2LCustom license7
MiniNDP
60 × 34 mm16 parts2LCustom license7
MiniNDP
60 × 34 mm15 parts2LCustom license7
MiniNDP
60 × 34 mm15 parts2LCustom license7
MiniNDP
60 × 34 mm14 parts2LCustom license7
MiniNDP
60 × 34 mm13 parts2LCustom license7
MiniNDP
72 × 26 mm13 parts2LCustom license7
MiniNDP
51.3 × 18.3 mm12 parts2LCustom license7
MiniNDP 512 Breadboard
157.5 × 55.9 mm9 parts2LCustom license7