Sold Amiga 020 accelerator dev board - Terriblefire TF520
- Thread starter CrazyBob
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CrazyBob
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Happy New Year!
@jediknight, correct the project is opensource.
Just some tips on building it and the parts being used:
- The socket on the 68020 breakout board need to have extra long pins which can be found here: http://www.ebay.co.uk/itm/222175199764
- The socket on TF520 mainboard I've used normal 1x40 2.54mm round pin header strips.
- All resistors are 4k7 ohm.
- Stephen used 200uF for C3 and C4, I've installed 47uF because that's what I had in stock.
- Stephen advised C5 and C6 to be as big in uF as possible, I've used 10uF.
- I've used an AMS1117 3.3v voltage regulator.
- You can solder an oscillator on the board, I've installed an SMA connector in order to connect it to my signal generator.
- The main difference between the rev 2 and rev3 TF520 board is the rev 3 uses an NXP 74LVC1G17GV Non-Inverting Schmitt Trigger Single Ended Buffer for the clock signal.
Try if it's needed (I haven't installed it, I had a clean signal) or use Stephen's guide to place it between the clock signal lines.
Note: 68020 breakout board is not needed for normal operation, it's for debugging with i.e. a logic analyzer
Update: all items have shipped last Friday
@jediknight, correct the project is opensource.
Just some tips on building it and the parts being used:
- The socket on the 68020 breakout board need to have extra long pins which can be found here: http://www.ebay.co.uk/itm/222175199764
- The socket on TF520 mainboard I've used normal 1x40 2.54mm round pin header strips.
- All resistors are 4k7 ohm.
- Stephen used 200uF for C3 and C4, I've installed 47uF because that's what I had in stock.
- Stephen advised C5 and C6 to be as big in uF as possible, I've used 10uF.
- I've used an AMS1117 3.3v voltage regulator.
- You can solder an oscillator on the board, I've installed an SMA connector in order to connect it to my signal generator.
- The main difference between the rev 2 and rev3 TF520 board is the rev 3 uses an NXP 74LVC1G17GV Non-Inverting Schmitt Trigger Single Ended Buffer for the clock signal.
Try if it's needed (I haven't installed it, I had a clean signal) or use Stephen's guide to place it between the clock signal lines.
Note: 68020 breakout board is not needed for normal operation, it's for debugging with i.e. a logic analyzer
Update: all items have shipped last Friday
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