ksr/p8xGenerated by generators/genkicad.py from the canonical geneagle netlist (CARDS["peripheral-card"]), same standard as the memory card: 4-layer (F/B signals, In1=GND, In2=VCC planes), a bypass cap above each IC, a…
P8x regbank card is an open-source printed circuit board by ksr, from the ksr/p8x repository on GitHub. It is a 4-layer board of 280 × 140 mm with 113 parts on 221 nets, routed with 4,377 tracks and 259 vias.
It is built around the 74HCT244D, 74HCT138D and 74HCT08D, with the 74HCT257D, 74HCT32D and 74HCT02D among its other parts. Its parts include 53 capacitors, 53 ICs, 3 resistors, 3 diodes and 1 connector.
Generated by generators/gen_kicad.py from the canonical gen_eagle netlist
(CARDS["peripheral-card"]), same standard as the memory card: 4-layer (F/B signals,
In1=GND, In2=VCC planes), a bypass cap above each IC, a labelled LED/jumper bank,
part values on silk. Routed with Freerouting. GENERATORS ARE CANON -- edit
gen_kicad.py and re-run generators/build_kicad_card.sh peripheral-card.
| File | What |
|---|---|
p8x-peripheral-card.kicad_pcb | the board |
p8x-peripheral-card.ses | the Freerouting routing |
p8x-peripheral-card-gerbers.zip | orderable gerbers |
p8x-peripheral-card-placement.pdf | parts placement (refs+values) |
p8x-peripheral-card-render-top.png / -3d.png | renders |
Exotic parts use the closest standard KiCad footprint (flagged when built).
| Qty | Value | Footprint | References |
|---|---|---|---|
| 53 | 100nF | C_Disc_D5.0mm_W2.5mm_P2.50mm | C1, C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23 +37 |
| 24 | 74HCT169 | DIP-16_W7.62mm | U1, U2, U3, U4, U10, U11, U12, U13, U14, U15, U16, U41, U42, U43, U44, U45 +8 |
| 16 | 74HCT244 | DIP-20_W7.62mm | U17, U18, U19, U20, U21, U22, U23, U24, U25, U26, U29, U36, U49, U50, U51, U52 |
| 4 | 74HCT138 | DIP-16_W7.62mm | U30, U31, U33, U39 |
| 3 | 1K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4, R5, RP1 |
| 2 | 74HCT08 | DIP-14_W7.62mm | U37, U38 |
| 2 | 74HCT257 | DIP-16_W7.62mm | U27, U28 |
| 2 | 74HCT32 | DIP-14_W7.62mm | U40, U53 |
| 2 | GRN | LED_D5.0mm | LED3, LED4 |
| 1 | 74HCT02 | DIP-14_W7.62mm | U34 |
| 1 | 74HCT139 | DIP-16_W7.62mm | U32 |
| 1 | 74HCT14 | DIP-14_W7.62mm | U35 |
| 1 | MABC96R | DIN41612_C_3x32_Male_Horizontal_THT | J1 |
| 1 | YEL | LED_D5.0mm | LED5 |
ksr/p8x
Generated by generators/genkicad.py from the canonical geneagle netlist (CARDS["peripheral-card"]), same standard as the memory card: 4-layer (F/B signals, In1=GND, In2=VCC planes), a bypass cap above each IC, a…
ksr/p8x
Generated by generators/genkicad.py from the canonical geneagle netlist (CARDS["peripheral-card"]), same standard as the memory card: 4-layer (F/B signals, In1=GND, In2=VCC planes), a bypass cap above each IC, a…
ksr/p8x
Generated by generators/genkicad.py from the canonical geneagle netlist (CARDS["peripheral-card"]), same standard as the memory card: 4-layer (F/B signals, In1=GND, In2=VCC planes), a bypass cap above each IC, a…
ksr/p8x
Generated by generators/genkicad.py from the canonical geneagle netlist (CARDS["peripheral-card"]), same standard as the memory card: 4-layer (F/B signals, In1=GND, In2=VCC planes), a bypass cap above each IC, a…
ksr/p8x
Generated by generators/genkicad.py from the canonical geneagle netlist (CARDS["peripheral-card"]), same standard as the memory card: 4-layer (F/B signals, In1=GND, In2=VCC planes), a bypass cap above each IC, a…
ksr/p8x
Generated by generators/genkicad.py from the canonical geneagle netlist (CARDS["peripheral-card"]), same standard as the memory card: 4-layer (F/B signals, In1=GND, In2=VCC planes), a bypass cap above each IC, a…
ksr/p8x
Generated by generators/genkicad.py from the canonical geneagle netlist (CARDS["peripheral-card"]), same standard as the memory card: 4-layer (F/B signals, In1=GND, In2=VCC planes), a bypass cap above each IC, a…
ksr/p8x
Generated by generators/genkicad.py from the canonical geneagle netlist (CARDS["peripheral-card"]), same standard as the memory card: 4-layer (F/B signals, In1=GND, In2=VCC planes), a bypass cap above each IC, a…
ksr/p8x
Generated by generators/genkicad.py from the canonical geneagle netlist (CARDS["peripheral-card"]), same standard as the memory card: 4-layer (F/B signals, In1=GND, In2=VCC planes), a bypass cap above each IC, a…
ksr/p8x
Generated by generators/genkicad.py from the canonical geneagle netlist (CARDS["peripheral-card"]), same standard as the memory card: 4-layer (F/B signals, In1=GND, In2=VCC planes), a bypass cap above each IC, a…
ksr/p8x
Generated by generators/genkicad.py from the canonical geneagle netlist (CARDS["peripheral-card"]), same standard as the memory card: 4-layer (F/B signals, In1=GND, In2=VCC planes), a bypass cap above each IC, a…
Builder68/OpenEarlyMacsRAMexpansion
4 MB RAM upgrade for Macintosh 128K / 512K / 512Ke computers
It measures 280 × 140 mm and has 4 copper layers, 1.6 mm thick.
113 parts, built around the 74HCT244D, 74HCT138D, 74HCT08D and 74HCT257D. 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.
From the ksr/p8x repository on GitHub, at the commit this page was made from: the board is hardware/regbank-card/kicad/p8x-regbank-card.kicad_pcb and its schematic hardware/alu-card/kicad/p8x-alu-card-1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask ksr before reusing the design.