#gotek #trs80 #refurbish
In the latest installment of the TRS-80 Model II saga, I try to clean up and polish the case of the computer, then reassemble it so I can use it. Then I show how to get a cheap Gotek floppy emulator working in place of a 8" disk drive.
Correction: as people pointed out, they are more expensive than the last time I purchased them -- about $25 as of Jan 2022.
Part 1: https://youtu.be/x8DfSg7oMWg
Part 2: https://youtu.be/QQhJCRRkfDw
Part 3a: https://youtu.be/TfEzjcG_0gs (using 8" drives on a PC)
Part 3b: https://youtu.be/RMM16oeTB8A (all about termination)
Part 4: https://youtu.be/7DzJxdYdlKQ
Part 5: https://youtu.be/-h1ZGxwbsPg
Part 6: https://youtu.be/yMQiP2Xpmlk
Part 7: This part!
0:00 Intro
0:40 Assembly and reassembly of the Model II
19:34 Using a Gotek floppy drive as an 8" drive on the TRS-80 Model II
--- Video Links
Flash Floppy Open Source Firmware:
https://github.com/keirf/flashfloppy
Buy a Gotek drive:
https://amzn.to/33KEz0G (beige)
https://amzn.to/3fNeHDZ (black)
50 to 34 pin adapter I used:
https://www.ebay.com/itm/115106967099
HxCFloppyEmulator software to convert IMD to HFE files for the Gotek:
http://hxc2001.free.fr/floppy_drive_emulator/index.html#download
TRS-80 Model II manuals:
https://electrickery.hosting.philpem.me.uk/comp/trs80m2/doc/
TRS-80 Model II Github Archive: (with all the disk images)
https://github.com/pski/model2archive
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