4 layers243.8 × 170.2 mm
2 layers95.3 × 67.3 mm
Pc8033-clone interface
barbeque/pc8033-clone-interface3Clone of the NEC PC-8033 floppy drive interface for the original PC-8001
- Size
- 95.3 × 67.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 20
- Nets
- 85
- Pads
- 211
- Tracks, vias
- 447, 75
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 29 Dec 2023
- Updated
- 11 Jun 2024
Overview
Pc8033-clone interface is an open-source printed circuit board by barbeque, from the barbeque/pc8033-clone-interface repository on GitHub. It is a 2-layer board of 95.3 × 67.3 mm with 20 parts on 85 nets, routed with 447 tracks and 75 vias.
It is built around the 74LS04PC, 74LS30PC and 74LS32SC. Its parts include 5 ICs, 2 capacitors, 1 resistor and 1 connector. It belongs with the interfaces and adapters boards of this library.
Main components
3
74LS04PC
PDIP-140℃~+70℃ 4.75V~5.25V 6 6.6mA 74LS PDIP-14 InvertersonsemiInverters74LS30PC
PDIP-140℃~+70℃ 1 1.1mA 18ns@5V,50pF、20ns@5V,50pF 2.7V 2V 4.75V~5.25V 400uA 500mV 74LS Series 8 800mV 8mA NAND Gate PDIP-14 Logic GatesTexas InstrumentsLogic Gates
74LS32SC
-- Logic Gates ROHSTexas InstrumentsLogic Gates
README
README.mdPC-8033 Clone Interface
This open-source hardware allows original-model NEC PC-8001 computers to use intelligent-type floppy drives such as the PC-8031-2W and PC-80S31.
BOM
Please consult the interactive bom for the most helpful view.
| Reference | Component | Digi-Key link | Comment |
|---|---|---|---|
| C1 | 220µF capacitor | ||
| C2 | 0.1µF capacitor | ||
| R1 | 4.7kΩ resistor | ||
| U1 | 2x25-pin (50-pin) pin header | ||
| U2 | DIP 74LS32 | ||
| U3 | DIP 74LS04 | ||
| U4 | DIP Intel (or clone) 8255 | ||
| U5 | DIP 74LS30 | ||
| RN1, RN2, RN3 | 4.7kΩ bussed 8-resistor network (9-pin) | ||
| J2 | 2x17 (PC-8031) or 2x18 (PC-80S31) pin header |
Cable from PC-8001
A 50-pin female edge connector and 50-pin female 0.1" IDC header are required. Crimp a straight 50-pin ribbon cable, such that pin 1 of the edge connector connects to pin 1 of the female IDC header. Attach to PC-8033 clone board, paying attention to board callout for pin "01."
Cable to Floppy Drive
A cable will have to be made to connect to the disk drive.
PC-8031-2W (34-pin edge connector)
Use an IDC crimper to crimp a 34-pin ribbon into 34-pin female (0.1") and 34-pin edge connector. Do not cross over (pin 1 on J2 should be pin 1 on the floppy drive.)
Connect to floppy drive, paying attention to pin 1 arrow on back.
PC-80S31 (36-pin 57-series Centronics)
Use an IDC crimper to crimp a 36-pin ribbon into a 36-pin female (0.1") and 36-pin Centronics connector. Do not cross over.
Connect to floppy drive.
Enclosure
TBD
Parts
20| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 4.7kΩ | Resistor_THT:R_Array_SIP9 | RN1, RN2, RN3 |
| 1 | +5V | TestPoint:TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP1 |
| 1 | 0.1µF | Capacitor_THT:C_Disc_D3.4mm_W2.1mm_P2.50mm | C2 |
| 1 | 220µF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1 |
| 1 | 4.7kΩ | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R1 |
| 1 | 74LS04 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U3 |
| 1 | 74LS30 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U5 |
| 1 | 74LS32 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U2 |
| 1 | 80s31 | PC-8001:Centronics_36_FDD | J2 |
| 1 | 82C55A | Package_DIP:DIP-40_W15.24mm | U4 |
| 1 | GND | TestPoint:TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP2 |
| 1 | Jumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged2Bar_Pad1.0x1.5mm | JP1 |
| 1 | ~ | Connector_PinHeader_2.54mm:PinHeader_2x25_P2.54mm_Vertical | U1 |
| 1 | ~{EXTON} | Jumper:SolderJumper-2_P1.3mm_Bridged2Bar_Pad1.0x1.5mm | JP2 |
The 16 most common of 20 parts.
Questions
How big is the Pc8033-clone interface PCB?
It measures 95.3 × 67.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pc8033-clone interface use?
20 parts, built around the 74LS04PC, 74LS30PC and 74LS32SC. 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 Pc8033-clone interface KiCad files?
From the barbeque/pc8033-clone-interface repository on GitHub, at the commit this page was made from: the board is pc-8033-clone-interface.kicad_pcb and its schematic pc-8033-clone-interface.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pc8033-clone interface design in my own project?
Its repository states no licence, so its author keeps all rights: ask barbeque before reusing the design.
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