Epic (Long Special) Ending to the 2 x A2386 Card Repairs (Part 4)

A number of fixes and upgrades, along with some testing.

This time back for a double length episode where I finish off the 2 x Commodore Amiga A2386 Bridge Boards!

Part 1 – https://youtu.be/iZAywHPlKBQ
Part 2 – https://youtu.be/_zBdh44lAf8
Part 3 – https://youtu.be/mf6wCUeSCP0

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00:00:00 Intro
00:01:50 Battery draining
00:03:50 Why RAM was halved…
00:04:08 0806 Post Card error
00:07:01 Testing and general talk about the A2386
00:18:23 Testing with the A2630 (@25Mhz)
00:23:54 Testing with the TF520 (@33Mhz)
00:30:33 Testing with the stock 68000 (@7.09Mhz)
00:32:52 Testing with the TF530 (@40Mhz)
00:37:21 Weird external floppy drive behaviour, 0806 talk, VGA card issue
00:47:34 Tidying up the board for Pillock
00:49:55 Green screens
00:50:35 More RAM
00:53:14 Crazy reset issue using PCReset?
01:09:39 FDD reset trace to nowhere
01:13:43 Crazy random fix / upgrade to PCReset problem?
01:26:16 Final clean and test of Pillocks card
01:32:40 Fitting a Cyrix FasMath FPU / strange clock speed issue
01:41:51 Defrag
01:43:30 Benchmarking
01:47:35 Upgrading ZIP RAM to 8MB
01:52:08 Second Reality
01:57:23 Final issues and close-up

#commdore
#amiga
#retrocomputer