Hi Amibay,
I have some A500 trapdoor circuit boards for sale. They require some DIY soldering to complete, but are reasonably easy for 512 KB, but more difficult if you want more RAM.
In summary, what you can do with this board is:
* 512K for A500, this can be CHIP or SLOW depending on Agnus.
* Real time clock with coin cell battery.
* 2MB for A500 with gary adapter, adds 0.5chip + 1.5slow, machine total becomes 2.5MB.
* 1MB additional chip RAM for A500+.
The bare minimum to get this working are these parts:
1. The board.
2. A 2x28 right-angle 2.54mm female header (or get a 2x40 and cut it).
3. One or two 0805 100nF capacitors (I can include them, just ask).
4. One SOJ42 memory chip. Pull them off old 1990's SIMMs or search for "SOJ42" on AliExpress.
There is a further development thread on EAB, which you could search for.
Price: AUD$15 per board (this is around €10,70 euro) by Paypal 'friends & family' payment. Postage is at your risk, unless you want to pay for tracking.
Australia Postage:
AUD$1.00 for small letter - 1 board only (one stamp).
AUD$2.40 for "large letter post" (two stamps) + small cardboard 20mm box.
Add 50c for a priority label.
AUD$7.60 for a parcel - probably over-kill, but it's your option.
International Postage:
AUD$2.95 for letter post (in an envelope, taped to a postcard, one board only).
AUD$8.00 for large letter (in a bubble bag).
If you prefer a parcel, let me know, but it's a lot more expensive.
PM with your country and I'll give you details. If you send me an extra $1 I'll include the capacitors (tell me how many you want).
I have some A500 trapdoor circuit boards for sale. They require some DIY soldering to complete, but are reasonably easy for 512 KB, but more difficult if you want more RAM.
In summary, what you can do with this board is:
* 512K for A500, this can be CHIP or SLOW depending on Agnus.
* Real time clock with coin cell battery.
* 2MB for A500 with gary adapter, adds 0.5chip + 1.5slow, machine total becomes 2.5MB.
* 1MB additional chip RAM for A500+.
The bare minimum to get this working are these parts:
1. The board.
2. A 2x28 right-angle 2.54mm female header (or get a 2x40 and cut it).
3. One or two 0805 100nF capacitors (I can include them, just ask).
4. One SOJ42 memory chip. Pull them off old 1990's SIMMs or search for "SOJ42" on AliExpress.
There is a further development thread on EAB, which you could search for.
Price: AUD$15 per board (this is around €10,70 euro) by Paypal 'friends & family' payment. Postage is at your risk, unless you want to pay for tracking.
Australia Postage:
AUD$1.00 for small letter - 1 board only (one stamp).
AUD$2.40 for "large letter post" (two stamps) + small cardboard 20mm box.
Add 50c for a priority label.
AUD$7.60 for a parcel - probably over-kill, but it's your option.
International Postage:
AUD$2.95 for letter post (in an envelope, taped to a postcard, one board only).
AUD$8.00 for large letter (in a bubble bag).
If you prefer a parcel, let me know, but it's a lot more expensive.
PM with your country and I'll give you details. If you send me an extra $1 I'll include the capacitors (tell me how many you want).
Attachments
Last edited: