A4092-terminator

A4091·A4092·Kicad/Terminator-LT1118-2.85/A4092-terminator.kicad_pcb

A4092-terminator PCB layout, top view — open source board by A4091

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About the A4092-terminator PCB

A4092-terminator is an open source PCB design by A4091, published on GitHub. It is a 2-layer board measuring 72.3 × 17.6 mm, with 10 components from 6 distinct parts.

Other key parts include the SN74ABT16543DGGR. By type, the board carries 6 resistors, 2 capacitors, 1 IC 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.…

A4092-terminator, from the project README — From the project README

Main components on the A4092-terminator

SN74ABT16543DGGR

A4092-terminator bill of materials (BOM)

10 components, 6 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	SN74ABT16543DGGR LT1118-2.85	SOT-223-3_TabPin2	U1
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	100K	R_0603_1608Metric	R3
1	4.7K 110Ω	BO_CAY16	RN1
4	110Ω	BO_CAY16	RN2, RN3, RN4, RN5

A4092-terminator 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: common questions

How big is the A4092-terminator PCB?

The A4092-terminator measures 72.3 × 17.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the A4092-terminator?

10 components, from 6 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 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 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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