HardLabs

Z80

dennis9819·Z8C-Homebrew-Computer·Modules/001-CPU Board V2_old/Schematics/Z80.kicad_pcb

Z80 PCB layout, top view — open source board by dennis9819

About the Z80 PCB

Z80 is an open source PCB design by dennis9819, published on GitHub. It is a 2-layer board measuring 160 × 100.3 mm, with 64 components from 34 distinct parts.

Other key parts include the Z80CPU, HM62256BLP, 28C256, 74HC137 and 74HC00. By type, the board carries 20 capacitors, 16 resistors, 15 ICs, 5 connectors, 2 transistors 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

Z80CPUHM62256BLP28C25674HC13774HC0074HC0274HC7474HC14NE555PGAL16V874HC245Z84C3010PEGZ84C4206PEGMAX232

Z80 bill of materials (BOM)

64 components, 34 distinct parts.

QtyPartRefs
1
Z80CPU
U1
2
HM62256BLP
U2, U3
1
28C256
U4
1
74HC137
U5
1
74HC00
U6
1
74HC02
U7
1
74HC74
U8
1
74HC14
U9
1
NE555P
U10
1
GAL16V8
U11
1
74HC245
U12
1
Z84C3010PEG
CTC-DIP-28
U13
1
Z84C4206PEG
SIO0-DIP-40
U14
1
MAX232
U15
2
BC548
Q1, Q2
1
3.686411MHz
X1
1
7.372800MHz
X2
1
CTC_CLK_SEL
J1
1
CON_FTDI
J2
1
ROM_/WR_EN
J3
Show 14 more
QtyPartRefs
1
Barrel_Jack
J5
1
Conn_02x32_Row_Letter_First
J6
1
SW_DIP_x08
SW1
1
SW_SPDT
SW2
2
MENOTR_A500_Dual_3mm
LED1, LED2
4
1uF
C1, C2, C4, C5
1
200nF
C3
14
100nF
C6, C8, C9, C10, C11, C12, C13, C14 +6
1
100uF
C7
9
4.7k
R1, R2, R3, R4, R6, R9, R13, R14 +1
1
1M
R5
2
220
R7, R8
3
R
R10, R11, R12
1
10k
RN1

Z80 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: common questions

How big is the Z80 PCB?

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

How many components are on the Z80?

64 components, from 34 distinct parts. The full bill of materials is listed on this page.

Where can I download the Z80 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 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.

More boards in Z8C-Homebrew-Computer

Similar boards