4 layers100 × 115 mm
Transistorfet z280 Z280-SBC
punkfab/pcb-corpus
235 real KiCad boards from open-source hardware repositories, prepared as a placement and routing benchmark
56 parts1
2 layers228.6 × 109.2 mm
Pk88
and3rson/pk884Single-board computer based on KM1810VM88 CPU (Ukrainian clone of Intel 8088).
- Size
- 228.6 × 109.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 59
- Nets
- 169
- Pads
- 559
- Tracks, vias
- 65, 0
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 23 Sep 2023
- Updated
- 11 Dec 2023
Overview
Pk88 is an open-source printed circuit board by and3rson, from the and3rson/pk88 repository on GitHub, published under the MIT licence. It is a 2-layer board of 228.6 × 109.2 mm with 59 parts on 169 nets, routed with 65 tracks and 0 vias.
It is built around the 74HC14, DS1813-5+ and L7805, with the 74HC573 and T6963C among its other parts. Its parts include 16 capacitors, 6 resistors, 3 ICs, 3 connectors and 2 diodes. It belongs with the computers and single-board computers boards and the FPGA and CPLD boards of this library.
Main components
5
74HC14
SOP-14-40℃~+85℃ 1.9V、3.98V、4.4V、5.48V、5.9V 100mV、260mV、260mV 20uA 25ns@4.5V,50pF 2V~6V 6 74HC Noise suppression function Schmitt trigger SOP-14 Inverters ROHSJSMSEMIInvertersDS1813-5+
TO-92-3-40℃~+85℃@(Ta) 1 1.2V~5.5V 150ms 4.75V Active Low No Open Drain Voltage Monitor Yes TO-92-3 Supervisor and Reset ICs ROHSAnalog DevicesSupervisor And Reset ICs
L7805
TO-220ST0℃~+125℃@(Tj) 1 1.2A 20V 2V@(1A) 42uV 500uA 5V 73dB@(120Hz) Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
74HC573
SOP-20-40℃~+85℃ 14ns 1ns 2V~6V 4ns 74HC 8 8uA D Latch Tri-State SOP-20 Latches ROHSHXY MOSFETLatchesT6963C
QFP-67QFP-67 New Arrivals ROHSToshibaUncategorised
README
README.mdPK88
Single-board computer based on KM1810VM88 CPU (Ukrainian clone of Intel 8088) that can run ELKS!
PK stands for Персональний Комп'ютер ("Personalnii Kompyuter", i.e. "Personal Computer") in Ukrainian.
This board runs @ 8 MHz (24 MHz oscillator) in minimum mode.
- KiCad schematics
- GAL sources - Address & I/O port decoders using 2x ATF16V8
- Various circuit simulations - made with Digital
- MetalBIOS - IBM PC XT compatible-ish BIOS that I made specifically for PK-88
Resources
- 8088/x86 instruction set: https://zsmith.co/intel.php
- Zen of Assembly language (including 8088 instruction set): http://www.jagregory.com/abrash-zen-of-asm/
- Soviet IC series differences: http://vozom.ho.ua/R4/page21.html
- IBM PC technical reference: http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/pc/at/6183355_PC_AT_Technical_Reference_Mar86.pdf
Parts
59| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 0.1 uF | footprints:C_Disc_Long | C1, C2, C4, C5, C7, C8, C10, C15, C16 |
| 6 | 10K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R2, R3, R4, R5, R6 |
| 4 | 0.1 uF | footprints:C_Disc_VeryLong | C6, C9, C12, C13 |
| 4 | MountingHole | footprints:Hole_3.5x5 | H1, H2, H3, H4 |
| 2 | 0.1 uF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C3, C11 |
| 2 | 74HC573 | Package_DIP:DIP-20_W7.62mm_Socket | ADDR1, ADDR2 |
| 2 | ATF16V8 | Package_DIP:DIP-20_W7.62mm_Socket | DEC1, DEC2 |
| 1 | 1.8432 MHz | footprints:Oscillator_DIP-8-14 | X2 |
| 1 | 10 uF | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C14 |
| 1 | 15 MHz | footprints:Oscillator_DIP-8-14 | X1 |
| 1 | 16550 | Package_DIP:DIP-40_W15.24mm_Socket | UART1 |
| 1 | 74HC14 | Package_DIP:DIP-14_W7.62mm_Socket | U2 |
| 1 | 8253 | Package_DIP:DIP-24_W15.24mm | PIT1 |
| 1 | 8255 | Package_DIP:DIP-40_W15.24mm | PPI1 |
| 1 | 8259 | Package_DIP:DIP-28_W15.24mm_Socket | PIC1 |
| 1 | ATF22V10 | Package_DIP:DIP-24_W7.62mm_Socket | KB1 |
| 1 | ATF750C_SPI | Package_DIP:DIP-24_W7.62mm_Socket | SPI1 |
| 1 | Barrel_Jack | Connector_BarrelJack:BarrelJack_Wuerth_6941xx301002 | J1 |
| 1 | Buzzer | Buzzer_Beeper:Buzzer_TDK_PS1240P02BT_D12.2mm_H6.5mm | BZ1 |
| 1 | DS1813-5+ | Package_TO_SOT_THT:TO-92L_Inline_Wide | U3 |
| 1 | G*** | kibuzzard-65254FDB | kibuzzard-65254FDB |
| 1 | G*** | kibuzzard-65254FD7 | kibuzzard-65254FD7 |
| 1 | KM1810VM88 | Package_DIP:DIP-40_W15.24mm | CPU1 |
| 1 | L7805 | Package_TO_SOT_THT:TO-220-3_Vertical | U1 |
| 1 | Mini-DIN_6pins_ver3 | Custom_Footprints:Connector_Mini-DIN_Female_6Pin_2rows | P1 |
| 1 | Power | LED_THT:LED_D3.0mm | D1 |
| 1 | RAM1 (AS6C4008) | Package_DIP:DIP-32_W15.24mm | RAM1 |
| 1 | RAM2 (AS6C4008) | Package_DIP:DIP-32_W15.24mm | RAM2 |
| 1 | ROM (W27C512) | footprints:ZIF28 | ROM1 |
| 1 | R_Network03_Split | Resistor_THT:R_Array_SIP4 | RN1 |
| 1 | R_Potentiometer | Potentiometer_THT:Potentiometer_Bourns_3296Y_Vertical | RV1 |
| 1 | Reset | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW1 |
| 1 | Reset | LED_THT:LED_D3.0mm | D2 |
| 1 | SW_Push_DPDT | footprints:PB22E06 | SW2 |
| 1 | T6963C | footprints:LCD240128_TFT_var2 | LCD1 |
| 1 | UART | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J2 |
| 1 | uSD adapter | footprints:MicroSD-Adapter | SD1 |
Questions
How big is the Pk88 PCB?
It measures 228.6 × 109.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pk88 use?
59 parts, built around the 74HC14, DS1813-5+, L7805 and 74HC573. 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 Pk88 KiCad files?
From the and3rson/pk88 repository on GitHub, at the commit this page was made from: the board is kicad/main.kicad_pcb and its schematic kicad/bak/ints.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pk88 design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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