S100 Z80 V5
About the S100 Z80 V5 PCB
S100 Z80 V5 is an open source PCB design by CatspersCoffee, published on GitHub under the Custom license license. It is a board measuring 254 × 134.6 mm, with 138 components from 60 distinct parts.
Other key parts include the Z80, 74LVC573, 74LS04, 74LS157 and 74LS165. By type, the board carries 38 capacitors, 35 ICs, 25 resistors, 12 connectors, 10 diodes and 4 relays.
It belongs with the retro computing designs in this gallery, and the repository also holds 2 earlier revisions of it.
From the project
S-100 bus boards designed and built: Z80 and 80386 CPU cards, SRAM/DRAM memory, CPLD/FPGA I/O and SPI boards, an 18-slot backplane and bus terminator. KiCad designs with Xilinx XC9500 CPLD and Spartan-6 FPGA logic, with the original design history replayed in git.
An S-100 bus-master CPU card built around a Zilog Z80, in four revisions (silkscreen REV 1.0 to REV 5.0), 2014–2016. From REV 4.0 on, most of the bus control logic is in a Xilinx XC9572 CPLD.
Left: REV 4.0 (v4/). Right: REV 5.0 (v5/).
- Board: 254.0 x 134.6 mm (10.0 x 5.3 in), two layers, the same outline on all revisions. - Switches and jumpers (v5): DIP switches "RAM WAIT", "I/O WAIT" and "ROM WAIT". SW1 "RESET". K1 "ROM LOCK". P6 "CLK SEL". P7 "NMI ENABLE". P5 "XILINX CABLE" (JTAG). P11 is the CPLD I/O header. - LEDs (v5): "Z80 BUS MASTER", "ROM SELECT", "WAIT", "POWER", and D4–D7, D9…
Main components on the S100 Z80 V5
S100 Z80 V5 bill of materials (BOM)
138 components, 60 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Z80 | DIP-40__600_ELL | U1 |
| 4 | 74LVC573 | DIP-20__300_ELL | U2, U3, U12, U22 |
| 1 | 74LS04 | 14DIP-ELL300 | U4 |
| 2 | 74LS157 | 16DIP-ELL300 | U5, U6 |
| 1 | 74LS157 | DIP-16__300_ELL | U8 |
| 3 | 74LS165 | DIP-16__300_ELL | U9, U10, U11 |
| 1 | 2764 | DIP-28__600_ELL | U13 |
| 1 | 74LS682N | DIP-20__300_ELL | U14 |
| 1 | 74LS153 | DIP-16__300_ELL | U15 |
| 1 | 74LS153 | 16DIP-ELL300 | U16 |
| 1 | 74LS08 | DIP-14__300_ELL | U17 |
| 2 | 74LS244 | DIP-20__300_ELL | U19, U20 |
| 1 | ^^74LS541 | DIP-20__300_ELL | U21 |
| 2 | 74LS02 | DIP-14__300_ELL | U23, U45 |
| 1 | ^^LOGO1 | ***Z80cpuV32 | U26 |
| 1 | 74LS139 | DIP-16__300_ELL | U27 |
| 2 | 74LS00 | DIP-14__300_ELL | U28, U31 |
| 4 | 74LS273 | DIP-20__300_ELL | U29, U30, U32, U39 |
| 2 | 74LS74 | DIP-14__300_ELL | U33, U34 |
| 1 | 74LS04 | DIP-14__300_ELL | U36 |
Show 40 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74LS05 | DIP-14__300_ELL | U37 |
| 1 | LDO_REG_7805 | ^^TO220 | U48 |
| 3 | ^^NPN-SOT23 | ^^SOT-23 | Q1, Q2, Q3 |
| 1 | S100_MALE | S100_MALE | P1 |
| 1 | CONN_4X2 | pin_array_4x2 | P2 |
| 1 | CLK_CPU | DIP-14__300_ELL | P3 |
| 1 | CONN_2X2 | PIN_ARRAY_2X2 | P4 |
| 1 | XILINX CABLE2 | PIN_ARRAY_5X2 | P5 |
| 1 | CLK SEL | PIN_ARRAY_2X2 | P6 |
| 1 | NMI | PIN_ARRAY_2X1 | P7 |
| 1 | CONN_2 | PIN_ARRAY_2X1 | P8 |
| 1 | CONN_5X2 | PIN_ARRAY_5X2 | P11 |
| 2 | CONN_1 | 1pin | P34, P35 |
| 1 | CONN_3X2 | pin_array_3x2 | P36 |
| 1 | 10 uF | C1V5 | Cx2 |
| 1 | ROM LOCK | SIL-3 | K1 |
| 1 | CONN_3 | SIL-3 | K2 |
| 1 | SLAVE_CLR | SIL-3 | K3 |
| 1 | EN_WAITS | SIL-3 | K17 |
| 5 | 1000 | r_pack9 | RR2, RR3, RR4, RR5, RR6 |
| 1 | 4700 | r_pack9 | RR7 |
| 1 | RESET | SW_PUSH_SMALL | SW1 |
| 3 | DIPS_08 | SWDIP8 | SW2, SW3, SW4 |
| 1 | ACTIVE | ^^LED-0805 | D1 |
| 1 | ROM | ^^LED-0805 | D2 |
| 1 | WAIT | ^^LED-0805 | D3 |
| 6 | CP1 | ^^LED-0805 | D4, D5, D6, D7, D9, D10 |
| 1 | D2-1 | ^^LED-0805 | D8 |
| 1 | 47 uF | C1V7 | C1 |
| 35 | 0.1 uF | C2 | C2, C4, C5, C6, C7, C8, C9, C10 +27 |
| 1 | 0.1 uF | C1V7 | C3 |
| 1 | 100nF | C2 | C21 |
| 10 | 330 | ^^SMD_Resistor-0805 | R1, R3, R4, R8, R13, R14, R15, R16 +2 |
| 3 | 470 | ^^SMD_Resistor-0805 | R2, R6, R9 |
| 2 | 1K | R3 | R5, R20 |
| 1 | 4K7 | R3 | R7 |
| 3 | 100 | ^^SMD_Resistor-0805 | R10, R11, R12 |
| 1 | 10k | R3 | R19 |
| 4 | 10 | R3 | R35, R36, R37, R38 |
| 1 | 4700 | R3 | R41 |
S100 Z80 V5 design files
The KiCad project lives in the CatspersCoffee/S100-Boards repository on GitHub; these links point at the commit this page was built from.
S100 Z80 V5: common questions
How big is the S100 Z80 V5 PCB?
The S100 Z80 V5 measures 254 × 134.6 mm and is 1.6002 mm thick.
How many components are on the S100 Z80 V5?
138 components, from 60 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 S100 Z80 V5 design files?
From the CatspersCoffee/S100-Boards repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the S100 Z80 V5 design in my own project?
It is published under Custom license, which limits how it may be reused; read the license before building on it.
More boards in S100-Boards
PICS100 B1FU
254 × 134.1 mm164 partsCustom license0
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PICS10 PIC SPI v1
254 × 134.1 mm163 partsCustom license0
S100 80386 SRAM V6
254 × 134.6 mm98 partsCustom license0
PIC4Mem board v2
150.4 × 75.2 mm86 partsCustom license0
Earlier revisions in the repo: s100_Z80 V4, s100_Z80 V3
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