A4092-terminator dev
A4091·A4092·Kicad/Terminator-dev/A4092-terminator-dev.kicad_pcb
About the A4092-terminator dev PCB
A4092-terminator dev is an open source PCB design by A4091, published on GitHub. It is a 2-layer board measuring 72.3 × 23.3 mm, with 13 components from 9 distinct parts.
Other key parts include the SN74ABT16543DGGR. By type, the board carries 8 resistors, 2 capacitors, 1 IC, 1 transistor and 1 connector.
It belongs with the retro computing designs in this gallery.
From the project
A4092 SCSI-2 Host Controller
The A4092 is a modern re-implementation of Dave Haynie's classic A4091 Zorro III SCSI controller for the Commodore Amiga. It retains a lot of the proven architecture and the NCR/LSI 53C710 SCSI controller at its core, while replacing obsolete and unobtainable components with modern equivalents that are more readily available today.
The original A4091 used eight discrete GALs (ATF22V10 and similar) programmed with WinCUPL to implement all bus interface, AutoConfig, address decoding, arbitration, and SCSI control logic. The A4092 consolidates all of this into a single Xilinx XC95144XL CPLD.…

Main components on the A4092-terminator dev
A4092-terminator dev bill of materials (BOM)
13 components, 9 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SN74ABT16543DGGR LT1118-2.85 | SOT-223-3_TabPin2 | U1 |
| 1 | AO3401A | SOT-23 | Q1 |
| 1 | CONN_02X25_ODD_EVEN Conn_02x25_Odd_Even | IDC-Header_2x25_P2.54mm_Horizontal | J1 |
| 2 | 10uF | CP_EIA-2012-12_Kemet-R | C1, C2 |
| 1 | 10K | R_0603_1608Metric | R1 |
| 1 | 4K7 100K | R_0603_1608Metric | R2 |
| 1 | 100K | R_0603_1608Metric | R3 |
| 1 | 4.7K 110 | BO_CAY16 | RN1 |
| 4 | 110 | BO_CAY16 | RN2, RN3, RN4, RN5 |
A4092-terminator dev design files
The KiCad project lives in the A4091/A4092 repository on GitHub; these links point at the commit this page was built from.
A4092-terminator dev: common questions
How big is the A4092-terminator dev PCB?
The A4092-terminator dev measures 72.3 × 23.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the A4092-terminator dev?
13 components, from 9 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 A4092-terminator dev design files?
From the A4091/A4092 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 A4092-terminator dev design in my own project?
The repository has no license, so all rights stay with A4091. Use it as a reference, and ask the author before reusing the design.
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