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C128 310381r7 sram adapter

hkzlab·C128_310381r7_sram_adapter

C128 310381r7 sram adapter PCB layout, top view — open source board by hkzlab
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About the C128 310381r7 sram adapter PCB

C128 310381r7 sram adapter is an open source PCB design by hkzlab, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 99.1 × 34.8 mm, with 18 components from 15 distinct parts.

Other key parts include the 128K x 8 SRAM, 74HCT00 and 74HCT573. By type, the board carries 9 connectors, 5 capacitors and 4 ICs.

It belongs with the retro computing designs in this gallery.

From the project

Static RAM replacement for the DRAMs on a C128 with a 310381R7 motherboard

Any use of this project is under your own responsibility. You will be responsible of checking the correct construction and functionality of your board. By using this project You will agree that I cannot be held responsible if it will destroy any of your devices, damage your computer, burn down your house or whatever.

WARNING: This device was only tested to fit on a motherboard model 310381R7!!!

C128 310381r7 sram adapter, from the project README
From the project README

Main components on the C128 310381r7 sram adapter

128K x 8 SRAM74HCT0074HCT573

C128 310381r7 sram adapter bill of materials (BOM)

18 components, 15 distinct parts.

QtyPartRefs
1
128K x 8 SRAM
U1
1
74HCT00
U2
1
74HCT573
U3
1
128K x 8 SRAM
U4
1
T_0_L_DRAM
J1
1
~{CAS_B}
J2
1
T_7_R_DRAM
J3
1
T_1_L_DRAM
J5
1
T_2_L_DRAM
J6
1
T_3_L_DRAM
J7
1
T_4_L_DRAM
J8
1
T_5_L_DRAM
J9
1
T_6_L_DRAM
J10
3
100nF
C1, C2, C3
2
82pF-820pF
C5, C6

C128 310381r7 sram adapter design files

The KiCad project lives in the hkzlab/C128_310381r7_sram_adapter repository on GitHub; these links point at the commit this page was built from.

C128 310381r7 sram adapter: common questions

How big is the C128 310381r7 sram adapter PCB?

The C128 310381r7 sram adapter measures 99.1 × 34.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the C128 310381r7 sram adapter?

18 components, from 15 distinct parts. The full bill of materials is listed on this page.

Where can I download the C128 310381r7 sram adapter design files?

From the hkzlab/C128_310381r7_sram_adapter repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the C128 310381r7 sram adapter design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

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