HardLabs

14mhz accelerator

Mathesar·14mhz-accelerator·hardware/14MHz_Accelerator_V2_2.kicad_pcb

14mhz accelerator PCB layout, top view — open source board by Mathesar

About the 14mhz accelerator PCB

14mhz accelerator is an open source PCB design by Mathesar, published on GitHub. It is a 2-layer board measuring 84 × 89 mm, with 40 components from 21 distinct parts.

Other key parts include the 512K*8_SRAM, MC68HC000, 74ACT02, 74HCT74 and 74ACT112. By type, the board carries 17 capacitors, 11 ICs, 5 resistors, 4 jumpers and 3 connectors.

It belongs with the retro computing and test & measurement designs in this gallery.

From the project

14MHz 68000 accelerator with 1MB fast ram for amiga 500

This is 14MHz 68000 accelerator with 1MB fast ram and disable switch for the Amiga. Tested on a rev. 5 Amiga 500. It might also work on other revisions and Amiga models but that has not been tested. The design is licensed under CERN OHL-S V2.0

The design is a complete overhaul of a design by Livio Plos and Jorg Richter. Although based upon that design so much has been changed that it is almost like a new design.

14mhz accelerator, from the project README
From the project README

Main components on the 14mhz accelerator

512K*8_SRAMMC68HC00074ACT0274HCT7474ACT11274HCT404674ACT0874ACT32TLC555CD

14mhz accelerator bill of materials (BOM)

40 components, 21 distinct parts.

QtyPartRefs
2
512K*8_SRAM
U1, U3
1
MC68HC000
U2
2
74ACT02
U4, U9
1
74HCT74
U5
1
74ACT112
U6
1
74HCT4046
U7
1
74ACT08
U8
1
74ACT32
U10
1
TLC555CD
U11
1
68K_Host_Interface
J1
1
TEST_POINT
J2
1
CDAC IN
J3
4
GS3
JP1, JP2, JP3, JP4
13
100n
C1, C2, C3, C4, C5, C6, C7, C8 +5
2
100p
C9, C15
1
22p
C11
1
47u/16V
C16
2
2K2
R1, R2
1
4K3
R3
1
33
R4
Show 1 more
QtyPartRefs
1
100K
R5

14mhz accelerator design files

The KiCad project lives in the Mathesar/14mhz-accelerator repository on GitHub; these links point at the commit this page was built from.

14mhz accelerator: common questions

How big is the 14mhz accelerator PCB?

The 14mhz accelerator measures 84 × 89 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 14mhz accelerator?

40 components, from 21 distinct parts. The full bill of materials is listed on this page.

Where can I download the 14mhz accelerator design files?

From the Mathesar/14mhz-accelerator repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the 14mhz accelerator design in my own project?

The repository has no license, so all rights stay with Mathesar. Use it as a reference, and ask the author before reusing the design.

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