Empty CPU board w CPLD

roberto314·Unicomp2·empty_CPU_board_w_CPLD/empty_CPU_board_w_CPLD.kicad_pcb

Empty CPU board w CPLD layout, top view — open source board by roberto314

About the Empty CPU board w CPLD

Empty CPU board w CPLD is an open source PCB design by roberto314, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 52 components from 16 distinct parts.

Other key parts include the XC9572VQ44, SN74LVC245ANSR and SN74LVC125AD. By type, the board carries 24 connectors, 10 resistors, 8 capacitors, 7 ICs and 3 jumpers.

It belongs with the retro computing designs in this gallery.

From the project

A modular 8-bit Computer able to recreate (nearly) every Retro computer of the late 70s to mid 80s.

A modular 8-bit Computer able to recreate (nearly) every microcomputer of the mid 70s to early 80s in Hardware without FPGAs (although an FPGA can be added). Can also be used as a teaching tool for:

VHDL or Verilog C RTOS (STM32F401 runs ChibiOS Link: https://www.chibios.org) Python bash and linux in general (Olimex board runs linux with fbterm and tmux) Harwaredesign Timing of CPUs maybe Assembler SPI and I2C Interfaces CPLDs and FPGAs

Empty CPU board w CPLD, from the project README — From the project README

Main components on the Empty CPU board w CPLD

XC9572VQ44 SN74LVC245ANSR SN74LVC125AD

Empty CPU board w CPLD bill of materials (BOM)

52 components, 16 distinct parts.

Qty	Part	Footprint	Refs
1	XC9572VQ44	TQFP-44_10x10mm_P0.8mm	U1
4	SN74LVC245ANSR	SO-20_5.3x12.6mm_P1.27mm	U2, U3, U4, U6
2	SN74LVC125AD	SOIC-14_3.9x8.7mm_P1.27mm	U8, U9
4	BUS	PinSocket_2x20_P2.54mm_Vertical	J1, J2, J3, J4
2	Conn_01x09	PinHeader_1x09_P2.54mm_Vertical	J5, J8
2	Conn_01x08	PinHeader_1x08_P2.54mm_Vertical	J6, J7
1	Conn_02x05_Odd_Even	PinHeader_2x05_P2.54mm_Horizontal	J9
6	Conn_01x01	PinHeader_1x01_P1.27mm_Vertical	J10, J11, J12, J13, J14, J15
2	Conn_01x12	PinHeader_1x12_P2.54mm_Vertical	J20, J21
5	Conn_02x36_Counter_Clockwise	Proto_2x36	J22, J23, J24, J25, J26
2	Conn_01x06	PinHeader_1x06_P1.27mm_Vertical	J30, J31
1	CLK	SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm_NumberLabels	JP7
1	RW	SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm	JP10
1	Vcc	SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm_NumberLabels	JP29
8	100n	C_1206_3216Metric	C1, C2, C3, C4, C5, C6, C7, C8
10	10k	R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R1, R2, R4, R5, R6, R7, R8, R9 +2

Empty CPU board w CPLD design files

The KiCad project lives in the roberto314/Unicomp2 repository on GitHub; these links point at the commit this page was built from.

Empty CPU board w CPLD: common questions

How big is the Empty CPU board w CPLD?

The Empty CPU board w CPLD measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Empty CPU board w CPLD?

52 components, from 16 distinct parts. The full bill of materials is listed on this page.

Where can I download the Empty CPU board w CPLD design files?

From the roberto314/Unicomp2 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Empty CPU board w CPLD design in my own project?

The repository has no license, so all rights stay with roberto314. Use it as a reference, and ask the author before reusing the design.

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