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A4092

A4091·A4092·Kicad/A4092/A4092.kicad_pcb

A4092 PCB layout, top view — open source board by A4091
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About the A4092 PCB

A4092 is an open source PCB design by A4091, published on GitHub. It is a 4-layer board measuring 175.6 × 122.1 mm, with 83 components from 29 distinct parts.

Other key parts include the SN74ABT16543DGGR, 74LVC07APW_118, SN74ABT16245ADGGR, AMS1117-3.3 and XC95144XL-TQ144. By type, the board carries 50 capacitors, 12 ICs, 11 resistors, 6 connectors, 2 diodes and 1 crystal.

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, from the project README
From the project README

Main components on the A4092

SN74ABT16543DGGR74LVC07APW_118SN74ABT16245ADGGRAMS1117-3.3XC95144XL-TQ144C9900133089DS21S07AW25X40CLSN

A4092 bill of materials (BOM)

83 components, 29 distinct parts — part numbers from the project's BOM.

QtyPartRefs
4
SN74ABT16543DGGR
U1, U2, U3, U4
1
74LVC07APW_118
U5
1
SN74ABT16245ADGGR
U6
1
AMS1117-3.3
U7
1
XC95144XL-TQ144
U9
1
C9900133089
NCR53c710 SCSI Host Controller
U10
2
DS21S07A
U11, U12
1
W25X40CLSN
U14
1
C7431196
Abracon ACO-50MHz
Y1
2
CONN_02X25_ODD_EVEN
Conn_02x25_Odd_Even
J1, J5
1
C6332196
TO-LED
J3
1
C6332196
TO-MB
J4
1
TO-A3000-LED
J8
1
TO-A3000-MB
J9
1
ASMDC185F/33-2
F1
1
SS24
D1
1
C965821
LED (green)
D2
5
10NF
10nF
C32, C1002, C1004, C1006, C1008
5
KEMET/A765EB476M1ELAE040
47uF
C33, C43, C44, C45, C47
35
100NF
100nF
C48, C101, C102, C103, C104, C201, C202, C203 +27
Show 9 more
QtyPartRefs
1
100nF
C501
1
10UF
10uF
C701
1
22UF
22uF
C702
2
4.7UF
4.7uF
C1102, C1202
1
120
R9
1
2.2K
2.2k
R10
1
22
R11
1
10K
R1401
7
1K
RN6, RN7, RN10, RN14, RN15, RN16, RN17

A4092 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: common questions

How big is the A4092 PCB?

The A4092 measures 175.6 × 122.1 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the A4092?

83 components, from 29 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 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 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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