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Zx50 FrontPanelDisplay

mmosko·Zx50·boards/Zx50_FrontPanelDisplay/Zx50_FrontPanelDisplay.kicad_pcb

Zx50 FrontPanelDisplay PCB layout, top view — open source board by mmosko

About the Zx50 FrontPanelDisplay PCB

Zx50 FrontPanelDisplay is an open source PCB design by mmosko, published on GitHub. It is a 2-layer board measuring 152.4 × 114.3 mm, with 37 components from 32 distinct parts.

Other key parts include the 74AHC1G14, SN74HC595N, SN74ABT245BN and Z84C00XXP. By type, the board carries 10 diodes, 9 capacitors, 5 switches, 5 resistors, 4 ICs and 3 connectors.

From the project

The Zx50 is a custom 8-slot, passive backplane Z80 computer. It uses a "Shadow Bus" architecture where a Raspberry Pi Pico can take over the bus via DMA (~BUSRQ / ~BUSAK) to load RAM, debug, and monitor the system.

The Zx50 is a custom 8-slot, passive backplane Z80 computer. It uses a "Shadow Bus" architecture where a Raspberry Pi Pico can take over the bus via DMA (~BUSRQ / ~BUSAK) to load RAM, debug, and monitor the system.

* Backplane: 8 slots. Fully terminated with 10K SIP pull-up resistors on Address, Data, and Control lines. Includes an ~IEI/~IEO interrupt daisy chain and heavy bulk capacitance (1000µF).

Main components on the Zx50 FrontPanelDisplay

74AHC1G14SN74HC595NSN74ABT245BNZ84C00XXP

Zx50 FrontPanelDisplay bill of materials (BOM)

37 components, 32 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
74AHC1G14
HCMS-3973
U1
1
SN74HC595N
Texas Instruments
U2
1
SN74ABT245BN
HCMS-3962
U3
1
Z84C00XXP
AMS1117-3.3
U4
1
ZX50_EDGECONNECTOR
Front Panel 2
J1
1
Front Panel
J2
1
Remote Off
J3
1
DISP_EN
SW1
1
RUN
SW2
1
STEP
SW3
1
RESET
SW4
1
POWER
SW5
1
EA 205G-4NLED
LCD1
1
M1
D1
1
WAIT
D2
1
INT
D3
1
NMI
D4
1
HALT
D5
1
BUSRQ
D6
1
BUSAK
D7
Show 12 more
QtyPartRefs
1
RESET
D8
1
POWER
D9
1
RUN
D10
3
0.1UF
47uF
C1, C5, C7
4
0.1UF
0.1uF
C2, C3, C4, C6
1
0.1UF
10uF
C8
1
100UF
10uF
C9
1
470
33R
R1
1
10K
330R
R2
1
47K
330R
R3
1
330R
RN1
1
10K
RN2

Zx50 FrontPanelDisplay design files

The KiCad project lives in the mmosko/Zx50 repository on GitHub; these links point at the commit this page was built from.

Zx50 FrontPanelDisplay: common questions

How big is the Zx50 FrontPanelDisplay PCB?

The Zx50 FrontPanelDisplay measures 152.4 × 114.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Zx50 FrontPanelDisplay?

37 components, from 32 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 Zx50 FrontPanelDisplay design files?

From the mmosko/Zx50 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 Zx50 FrontPanelDisplay design in my own project?

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

More boards in Zx50