Simple KiCad For Simple Vintage Computer Hobbyists: Part 6 (VIC-20 6502 Replacement) [TCE #0598]
14Thanks to #PCBWAY for their ongoing support! http://www.pcbway.com/
Let's see if we can design a daughterboard to replace the original NMOS 6502 CPU in the Commodore VIC-20 with a modern CMOS W65C02S from WDC. This should reduce power consumption further in our VIC. We'll try using surface mount this time and see what problems we have with autorouting on a small board.
The details for this design can be found on my Github:
https://github.com/0ddjob/Commodore_VIC20
Yes, this has been done before, for example by @thebyteattic who have very kindly made the files available on their Github here:
https://github.com/TheByteAttic/6502-to-W65C02S-adapter
Disclaimer: I'm not a Kicad super-user, I'm not a circuit design guru, I'm just a simple vintage computer hobbyist who needs simple PCBs from time to time. And yes, this sort of thing has probably been designed a dozen times before, but there's no harm in trying to learn how it's done is there?
I'm using Kicad 9.0 on a 2022 MacBook Air (M2 with 24GB RAM) running macOS 15.3.2 (24D81).
Application: KiCad arm64 on arm64
Version: 9.0.0, release build
Platform: macOS Sequoia Version 15.3.2 (Build 24D81), 64 bit, Little endian, wxMac
00:00 ... Intro
05:50 ... The schematic & design requirements
13:20 ... Through-hole components
23:25 ... Surface mount components
32:00 ... Initial manual routing
36:12 ... Freerouting attempt - NOK
41:05 ... Freerouting attempt - OK!
44:48 ... Final PCB layout
46:50 ... PCBWAY plug-in
47:33 ... Channel thanks & outro
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