Part 1 of 2: Bread-bin Commodore 64 machines with main board revision 250407 and KU-14194HB have relatively soft and blurry video output. Also, there are numerous VIC-II chips that work on these machines. Is there any difference between the different revisions of VIC-II chips? Can we do anything to improve the quality of the video output on these old machines? Watch to find out!
C64 mainboards:
Longboard 250407 PAL/NTSC
Longboard KU-14194HB PAL
NTSC VIC-II chips:
6567R56A
6567R8
6567R9
--- Video Links
C64 and Atari Video pinout:
https://www.insentricity.com/a.cl/199/seeing-above-the-din
Wikipedia VIC-II:
https://en.wikipedia.org/wiki/MOS_Technology_VIC-II
NTSC Video diagram:
By Jmgonzalez - Own work, Public Domain, https://commons.wikimedia.org/w/index.php?curid=3494192
RF Modulator Delete
Github
https://github.com/tebl/C64-Modulator-Replacement
EasyFlash 3
http://store.go4retro.com/easyflash-3/
Adrian's Tools (for the EasyFlash 3)
https://github.com/misterblack1/ef3-c64-tools/tree/master
--- Tools
Deoxit D5:
https://amzn.to/2VvOKy1
http://store.caig.com/s.nl/it.A/id.1602/.f
Jonard Tools EX-2 Chip Extractor:
https://amzn.to/2VazxDS
https://www.jonard.com/Products/EX-2-DIP-IC-Extractor-24-40-Pins
Wiha Chip Lifter:
https://amzn.to/3a9ftWw
https://www.wihatools.com/precision-chip-lifter
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/
--- C64 Stuff
JaffyDOS:
http://blog.worldofjani.com/?p=3544
C64 Test Harness I use:
https://youtu.be/szSzA6T4Kdw
C64 Homebrew cartridge PCB: (used for the DeadTest / Diag Cart I use)
https://www.ebay.com/itm/Commodore-64-C64-C128-NEW-bare-HomeBrew-DEVelopment-cartridge-board-8-32k-2019/162430154398
EasyFlash 3 Multi-Cart:
http://store.go4retro.com/easyflash-3/
--- Instructional videos
My video on damage-free chip removal:
https://www.youtube.com/watch?v=XQVjwPsVFd8
--- Music
Music during time lapse:
Raindropsies_2SID by Wojciech Radziejewski (Shogoon)
https://csdb.dk/release/?id=160314
Intro music by:
Nathan Divino
@itsnathandivino
Outro Music:
Raindropsies_2SID by Wojciech Radziejewski (Shogoon)
https://csdb.dk/release/?id=160314