Z80-cmos nmos tester

Vakon84·z80-cmos-nmos-tester

Z80-cmos nmos tester PCB layout, top view — open source board by Vakon84

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About the Z80-cmos nmos tester PCB

Z80-cmos nmos tester is an open source PCB design by Vakon84, published on GitHub under the MIT license. It is a 2-layer board measuring 81.3 × 86.4 mm, with 38 components from 33 distinct parts.

Other key parts include the Z80CPU, 74LS193, 74LS02, 27C512 and 74LS573. By type, the board carries 10 diodes, 8 capacitors, 7 resistors, 5 ICs, 2 crystals and 2 connectors.

It belongs with the retro computing designs in this gallery.

From the project

Test your Z80 CPU at multiple frequencies and detemine if your remarked chip from China is a NMOS or CMOS variant. Based on the work originally by Виталий Рудик and later respun/improved by kinzi.

Test your Z80 CPU at multiple frequencies and detemine if your remarked chip from China is a NMOS or CMOS variant. Based on the work originally by Виталий Рудик and later respun/improved by kinzi.

I respun the PCB again to add a few quality of life improvements I wanted like a barrel power connetor, power switch and LED, current measuring header, improved reset circuitry, and switched to 1/2 can oscillators instead of using a crystal and associated components (Pierce oscillator).

Z80-cmos nmos tester, from the project README — From the project README

Main components on the Z80-cmos nmos tester

Z80CPU 74LS193 74LS02 27C512 74LS573

Z80-cmos nmos tester bill of materials (BOM)

38 components, 33 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	Z80CPU	3M_Textool_240-1288-00-0602J_2x20_P2.54mm	U1
1	74LS193	DIP-16_W7.62mm_Socket_LongPads	U2
1	74LS02	DIP-14_W7.62mm_Socket_LongPads	U3
1	27C512	DIP-28_W15.24mm_Socket_LongPads	U4
1	74LS573	DIP-20_W7.62mm_Socket_LongPads	U5
1	20MHZ 20MHz	Oscillator_DIP-8	X1
1	16MHZ 16MHz	Oscillator_DIP-8	X2
1	Barrel_Jack	BarrelJack_Horizontal	J1
1	CONN_02X05_ODD_EVEN Conn_02x05_Odd_Even	PinHeader_2x05_P2.54mm_Vertical	J2
1	Current Test	PinHeader_1x02_P2.54mm_Vertical	JP1
1	16MHZ/20MHZ 16MHz/20MHz	PinHeader_1x03_P2.54mm_Vertical	JP2
1	RESET	SW_TH_Tactile_Omron_B3F-10xx	SW1
1	SW_DPDT_X2 SW_DPDT_x2	KFC8.5x8.5 DPDT Push Switch	SW2
1	BAT42	D_DO-35_SOD27_P7.62mm_Horizontal	D1
1	POWER	LED_D3.0mm	D2
1	D0	LED_D5.0mm	D3
1	D1	LED_D5.0mm	D4
1	D2	LED_D5.0mm	D5
1	D3	LED_D5.0mm	D6
1	D4	LED_D5.0mm	D7

Show 13 more

Qty	Part	Footprint	Refs
1	D5	LED_D5.0mm	D8
1	D6	LED_D5.0mm	D9
1	D7	LED_D5.0mm	D10
6	100NF 100nf	C_Rect_L7.0mm_W3.5mm_P5.00mm	C1, C4, C5, C6, C7, C8
1	1UF 1uf	C_Rect_L7.0mm_W3.5mm_P5.00mm	C2
1	100UF 100uf	CP_Radial_D5.0mm_P2.00mm	C3
1	100R	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R1
1	10K	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R2
1	3.3K	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R3
1	470R	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R4
1	10K	R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal	R5
1	4.7K	R_Array_SIP6	RN1
1	1K	R_Array_SIP9	RN2

Z80-cmos nmos tester design files

The KiCad project lives in the Vakon84/z80-cmos-nmos-tester repository on GitHub; these links point at the commit this page was built from.

Z80-cmos nmos tester: common questions

How big is the Z80-cmos nmos tester PCB?

The Z80-cmos nmos tester measures 81.3 × 86.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Z80-cmos nmos tester?

38 components, from 33 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Z80-cmos nmos tester design files?

From the Vakon84/z80-cmos-nmos-tester repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Z80-cmos nmos tester design in my own project?

Yes, under the terms of its MIT license, which Vakon84 chose for the repository.

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