#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://youtu.be/UoY2OVK71Ew
Part 2: https://youtu.be/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:
https://my-store-c82bd2-2.creator-spring.com/
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