HardLabs

VideoRAM

slu4coder·Minimal-UART-Computer-1-2·Revisions 1.3 - 1.6 (FLASH)/Expansions/VGA Card/KiCAD/VideoRAM.kicad_pcb

VideoRAM PCB layout, top view — open source board by slu4coder
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About the VideoRAM PCB

VideoRAM is an open source PCB design by slu4coder, published on GitHub. It is a 2-layer board measuring 196.9 × 66.7 mm, with 39 components from 17 distinct parts.

Other key parts include the 74HC32, 74HC21, 74HC04, 74HC590 and 74HC00. By type, the board carries 19 ICs, 14 capacitors, 3 connectors and 3 resistors.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

Legacy: Version 1 and 2 of my TTL-only CPU featuring UART I/O, an expansion port, 512KB SSD at up to 10MHz clock speed

See tbd for the latest version 3. See https://github.com/slu4coder/Minimal-64x4-Home-Computer for a more feature-rich version.

This is a free and non-commercial project. I am in no way associated with any activies selling this as a product. Any such activity represents a license violation. Individual licenses apply for hardware and software parts. Please refer to appropriate documentations for detailed licensing information.

Main components on the VideoRAM

74HC3274HC2174HC0474HC59074HC0074HC245CY6225674HC16574HC173

VideoRAM bill of materials (BOM)

39 components, 17 distinct parts.

QtyPartRefs
2
74HC32
U1, U8
2
74HC21
U2, U4
1
74HC04
U3
2
74HC590
U5, U6
3
74HC00
U7, U11, U19
3
74HC245
U9, U10, U14
1
CY62256
U12
1
74HC165
U13
4
74HC173
U15, U16, U17, U18
1
EXPANSION PORT
J1
1
VGA connector
J2
1
EXT CLOCK
J3
1
47µF
C1
12
100nF
C2, C3, C4, C5, C6, C7, C8, C9 +4
1
100pF
C11
2
75
R1, R2
1
150
R3

VideoRAM design files

The KiCad project lives in the slu4coder/Minimal-UART-Computer-1-2 repository on GitHub; these links point at the commit this page was built from.

VideoRAM: common questions

How big is the VideoRAM PCB?

The VideoRAM measures 196.9 × 66.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the VideoRAM?

39 components, from 17 distinct parts. The full bill of materials is listed on this page.

Where can I download the VideoRAM design files?

From the slu4coder/Minimal-UART-Computer-1-2 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the VideoRAM design in my own project?

The repository has no license, so all rights stay with slu4coder. Use it as a reference, and ask the author before reusing the design.

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