Quote:
Originally Posted by Stedy
@kipper2K & mick
You do realise there's very little skyline where the RAM expansion fits, <10mm at the end?
There are many ways you could soup up the design, from easy to hard:
1) Mix L/R audio by 30%, using 4 resistors to make the audio less harsh.
2) Add some simple TTL logic to switch SEL0/SEL1 + MTR to allow DF0:/DF1: to be swapped for Gotek drives. Based on A4000 schematics.
3) Remove the RCA composite video connector and fit a 4 pin mini-din for S-video from the CXA1145/CXA2075 encoder. Connect Y to C via 100pF if you need composhite.
4) Remove the 23 way video connector, fit a HD15 VGA socket and a 4 pin mini-DIN (if you don't do option 3) in the space. Could also add the SCART/VESA VSIS fixes to the Amiga Sync signals to allow easier connection to video scalers/TVs.
5) Remove the RF modulator and the 5 pin square DIN plug. Fit a 2.5mm DC power plug and add a 12V to 5V converter and a -12V inverter. This provides a high current power supply for the unit by freeing up some space.
6) Fix the Amigas incompatibility with Type 1 compact flash cards on IDE by adding 74HC series TTL devices to correctly shift the IDE/CF signals to 5V CMOS levels.
7) Add the extra 1MB of chip RAM to the design by growing the PCB into the expansion slot. Maybe add a 8MB add-on?
8) Add a CPU connector slot.
It's easy to type this, to design, build and test takes time.
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You should definitely do a modified version.
I wouldn't know where to start with most of those for me it's just like a game of dot to dot.
