#appleii #repair #retro On today's video, we're going to take a deep dive into Apple II 80 column video cards. We have a couple to look at where we need to repair one and improve the way the video output looks with some ROM editing. Part 1: https://www.youtube.com/watch?v=UoY2OVK71Ew Part 2: https://www.youtube.com/watch?v=Tvig9Svrw4g Part 3: This video! --- Video Links Open source Apple II 80 column video card: https://github.com/btb/80ColumnCard Videx Softswitch Video: https://www.youtube.com/watch?v=AKtVg6KX40U Apple II Datanetics keyboard repair video: https://www.youtube.com/watch?v=wCuKToZqS4A Sup'R'Terminal Wikipedia https://en.wikipedia.org/wiki/Sup%27R%27Terminal Sup'R'Terminal Documentation https://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Interface%20Cards/80%20Column%20Cards/M%26R%20SUP%27R%27TERMINAL/ Videx: (Company information) https://en.wikipedia.org/wiki/Videx VidEx Videoterm Documentation: https://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Interface%20Cards/80%20Column%20Cards/Videx%20Videoterm/ Franklin Ace Display Card manual: http://vtda.org/docs/computing/Franklin/7005007B_ACEDissplayUserReference.pdf Franklin Ace Display Card Schematics: https://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Computers/Franklin/Franklin%20Ace%20500/Schematics/Franklin%20-%20Display%20Card%20Schematic.pdf Apple II Circuit Description (Book) https://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Books/W.%20Gayler%20-%20The%20Apple%20II%20Circuit%20Description.pdf Difference between the 6545 and 6845 CRTC: http://www.6502.org/users/andre/hwinfo/crtc/diffs.html Github Repo with all the modified ROMs: https://github.com/misterblack1/appleII-80col-ROMs Adrian's Digital Basement Merch store: null Adrian's Digital Basement ][ (Second Channel) https://www.youtube.com/channel/UCbtwi4wK1YXd9AyV_4UcE6g Support the channel on Patreon: https://www.patreon.com/adriansdigitalbasement -- Tools Deoxit D5: https://amzn.to/2VvOKy1 http://store.caig.com/s.nl/it.A/id.1602/.f O-Ring Pick Set: (I use these to lift chips off boards) https://amzn.to/3a9x54J Elenco Electronics LP-560 Logic Probe: https://amzn.to/2VrT5lW Hakko FR301 Desoldering Iron: https://amzn.to/2ye6xC0 Rigol DS1054Z Four Channel Oscilloscope: https://www.rigolna.com/products/digital-oscilloscopes/1000z/ Head Worn Magnifying Goggles / Dual Lens Flip-In Head Magnifier: https://amzn.to/3adRbuy TL866II Plus Chip Tester and EPROM programmer: (The MiniPro) https://amzn.to/2wG4tlP https://www.aliexpress.com/item/33000308958.html TS100 Soldering Iron: https://amzn.to/2K36dJ5 https://www.ebay.com/itm/TS100-65W-MINI-Digital-OLED-Programmable-Soldering-Iron-Anti-static-Structure/113382669853 EEVBlog 121GW Multimeter: https://www.eevblog.com/product/121gw/ DSLogic Basic Logic Analyzer: https://amzn.to/2RDSDQw https://www.ebay.com/itm/USB-Logic-DSLogic-Basic-Analyzer-16Ch-100MHz-4Ch-400MHz-Xilinx-Spartan-6-FPGA/202543965672 Magnetic Screw Holder: https://amzn.to/3b8LOhG https://www.harborfreight.com/4-inch-magnetic-parts-tray-90566.html Universal ZIP sockets: (clones, used on my ZIF-64 test machine) https://www.ebay.com/itm/14-16-18-20-24-28-32-40-pin-IC-Test-Universal-ZIF-Socket-Fs/303206721971 RetroTink 2X Upconverter: (to hook up something like a C64 to HDMI) http://www.retrotink.com/ Plato (Clone) Side Cutters: (order five) https://www.ebay.com/itm/1-2-5-10PCS-Micro-Scissor-125mm-PLATO-170-Electronics-Cutter-Side-Cutting-Pliers/163458746184 Heat Sinks: https://www.aliexpress.com/item/32537183709.html Little squeezy bottles: (available elsewhere too) https://amzn.to/3b8LOOI --- Links My GitHub repository: https://github.com/misterblack1?tab=repositories Commodore Computer Club / Vancouver, WA – Portland, OR – PDX Commodore Users Group https://www.commodorecomputerclub.com/ --- Instructional videos My video on damage-free chip removal: https://www.youtube.com/watch?v=XQVjwPsVFd8 --- Music Intro music and other tracks by: Nathan Divino @itsnathandivino