ZTO-80 SIO
About the ZTO-80 SIO PCB
ZTO-80 SIO is an open source PCB design by jacobtohahn, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 99.1 × 57.2 mm, with 32 components from 16 distinct parts.
Other key parts include the Z80SIO0 and 74HC688. By type, the board carries 16 resistors, 4 connectors, 4 jumpers, 3 capacitors, 2 ICs and 1 crystal.
It belongs with the retro computing designs in this gallery.
From the project
A Z80 computer system
To bridge jumpers, I recommend using standard 0.1 in. jumper shunts.
Main components on the ZTO-80 SIO
ZTO-80 SIO bill of materials (BOM)
32 components, 16 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Z80SIO0 | DIP-40_W15.24mm | U1 |
| 1 | 74HC688 | DIP-20_W7.62mm | U2 |
| 1 | 1.8432MHz | Oscillator_DIP-8 | X1 |
| 1 | ZTO-80 Bus | PinHeader_2x20_P2.54mm_Horizontal | J1 |
| 1 | Conn_01x02 | PinHeader_1x02_P2.54mm_Horizontal | J2 |
| 2 | SIOHDR | PinHeader_1x06_P2.54mm_Horizontal | J3, J4 |
| 2 | Jumper_NC_Small | PinHeader_1x02_P2.54mm_Vertical | JP1, JP2 |
| 2 | Jumper_2_Open | PinHeader_1x02_P2.54mm_Vertical | JP3, JP4 |
| 1 | SW_DIP_x06 | SW_DIP_SPSTx06_Slide_9.78x17.42mm_W7.62mm_P2.54mm | SW1 |
| 1 | LED 3MM RED | LED_D3.0mm | D1 |
| 3 | .1u | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1, C2, C3 |
| 1 | 220 | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1 |
| 2 | 10k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R2, R3 |
| 8 | 2.2k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R4, R6, R7, R8, R9, R11, R12, R13 |
| 4 | 100k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R5, R10, R14, R15 |
| 1 | R_Network08 | R_Array_SIP9 | RN1 |
ZTO-80 SIO design files
The KiCad project lives in the jacobtohahn/ZTO-80 repository on GitHub; these links point at the commit this page was built from.
ZTO-80 SIO: common questions
How big is the ZTO-80 SIO PCB?
The ZTO-80 SIO measures 99.1 × 57.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ZTO-80 SIO?
32 components, from 16 distinct parts. The full bill of materials is listed on this page.
Where can I download the ZTO-80 SIO design files?
From the jacobtohahn/ZTO-80 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the ZTO-80 SIO design in my own project?
Yes, under the terms of its CERN-OHL-S-2.0 license, which jacobtohahn chose for the repository.
More boards in ZTO-80
SBC3.1
127 × 96.5 mm67 parts2LCERN-OHL-S-2.020
SBC3.2
127 × 96.5 mm67 parts2LCERN-OHL-S-2.020
ZTO-80 SBC Backplane 5
99.1 × 91.4 mm28 parts2LCERN-OHL-S-2.020
ZTO-80 Backplane 5
99.1 × 91.4 mm25 parts2LCERN-OHL-S-2.020
ZTO-80 CPU
99.1 × 57.2 mm24 parts2LCERN-OHL-S-2.020
ZTO-80 CTC
99.1 × 57.2 mm17 parts2LCERN-OHL-S-2.020
ZTO-80 Memory
99.1 × 57.2 mm10 parts2LCERN-OHL-S-2.020
ZTO-80 Template
99.1 × 57.2 mm4 parts2LCERN-OHL-S-2.020
Similar boards
Expansion Card Retrofit
FrameworkComputer
24 × 27.3 mm5 parts2LCC-BY-4.01.1k
Rgb to hdmi
hoglet67
77 × 97 mm67 parts2LGPL-3.01.0k
Buffer
53.9 × 23.2 mm13 parts2LGPL-3.01.0k
X1
121.9 × 81.3 mm51 parts2LGPL-3.01.0k
Amiga External
21.9 × 76.7 mm6 parts2LGPL-3.01.0k
Videoslotadapter
152 × 57.6 mm13 parts2LGPL-3.01.0k