CrazyBob
Member
I have for sale the Amiga 020 accelerator opensource dev board TF520 from Stephen Leary.
Great to experiment with.
The set includes the blank TF520 rev 2 board and the blank 68020 breakout board.
I have 10 sets for sale, asking 2 euro a set.
2 sets sold to Draaake
2 sets sold to Surfer
2 sets sold to Sardine
2 sets sold to NoPyroNoParty
2 sets sold to cyberstormer
More information can be found on youtube or github:
https://github.com/terriblefire/tf520
https://youtu.be/QqDn7l8Fia0
Any questions or comments please let me know
How the end result looks like:
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
Great to experiment with.
The set includes the blank TF520 rev 2 board and the blank 68020 breakout board.
I have 10 sets for sale, asking 2 euro a set.
2 sets sold to Draaake
2 sets sold to Surfer
2 sets sold to Sardine
2 sets sold to NoPyroNoParty
2 sets sold to cyberstormer
More information can be found on youtube or github:
https://github.com/terriblefire/tf520
https://youtu.be/QqDn7l8Fia0
Any questions or comments please let me know
How the end result looks like:
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
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