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Z80-VDP

dennis9819·Z8C-Homebrew-Computer·.old/Schematics/Z80-VDP/Z80-VDP.kicad_pcb

Z80-VDP PCB layout, top view — open source board by dennis9819
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About the Z80-VDP PCB

Z80-VDP is an open source PCB design by dennis9819, published on GitHub. It is a 2-layer board measuring 160 × 100.3 mm, with 77 components from 33 distinct parts.

Other key parts include the L7805, 74LS688, 74HC245, 74HC125 and 74HC02. By type, the board carries 34 capacitors, 15 ICs, 14 resistors, 7 connectors, 3 jumpers and 2 crystals.

It belongs with the retro computing and usb & debug tools designs in this gallery.

From the project

To easily develop for my Z80 homebrew system, I designed a simple assempler development environment. This packs the following tasks into one script: zmac assembly object file creation (for xmodem upload) monitor file creation (creates monitor commands for ascii upload) symbol tab

To easily develop for my Z80 homebrew system, I designed a simple assempler development environment. This packs the following tasks into one script: zmac assembly object file creation (for xmodem upload) monitor file creation (creates monitor commands for ascii upload) symbol table include file generation * eeprom programming for the minipro

./build.sh dir`: Path to the location of the asm file

Main components on the Z80-VDP

L780574LS68874HC24574HC12574HC02V995841464CXA2075M

Z80-VDP bill of materials (BOM)

77 components, 33 distinct parts.

QtyPartRefs
1
L7805
U1
1
74LS688
U2
3
74HC245
U3, U4, U5
1
74HC125
U6
1
74HC02
U7
1
V9958
U8
6
41464
U9, U10, U12, U13, U14, U15
1
CXA2075M
U11
1
ACO-xxxMHz
X1
1
21.477MHz
Y1
1
Conn_02x32_Row_Letter_First
J1
1
Conn_02x05_Counter_Clockwise
J2
1
S-VIDEO Out
J4
1
Composite Out
J6
1
RGBOut_Red
J7
1
RGBOut_Green
J8
1
RGBOut_Blue
J9
1
Conn_02x06_Odd_Even
JP1
2
JUMPER
JP2, JP3
2
FerriteBead
FB1, FB2
Show 13 more
QtyPartRefs
1
470uF
C1
22
100nF
C2, C3, C4, C7, C8, C9, C10, C11 +14
2
22pF
C5, C6
2
47uF
C13, C14
6
220uF
C17, C18, C19, C20, C21, C24
1
2200uF
C34
3
470R
R1, R2, R3
2
2k2
R4, R5
5
75
R6, R7, R8, R11, R12
1
43
R9
1
2k61
R10
1
240
R13
1
R_Network08
RN1

Z80-VDP design files

The KiCad project lives in the dennis9819/Z8C-Homebrew-Computer repository on GitHub; these links point at the commit this page was built from.

Z80-VDP: common questions

How big is the Z80-VDP PCB?

The Z80-VDP measures 160 × 100.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Z80-VDP?

77 components, from 33 distinct parts. The full bill of materials is listed on this page.

Where can I download the Z80-VDP design files?

From the dennis9819/Z8C-Homebrew-Computer repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Z80-VDP design in my own project?

The repository has no license, so all rights stay with dennis9819. Use it as a reference, and ask the author before reusing the design.

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