Taken from Joerg's site:
Interface
trapdoor slot, Gary socket
16 DIP sockets accept up to 2 MB RAM supports 256k×4 DIPs accepts DIPs in
groups of four giving 0.5, 1, 1.5, 2 MB configurations can be configured to
provide 512 kB Chip RAM and up to 1.5 MB Fast RAM battery backed up clock
the RAM board connects to the trapdoor slot the adapter board connects to
Gary's socket - if 1 MB Chip RAM is present, a wire has to be soldered between
the adaptor and the motherboard.
Question is, "what wire"?!? Are you 100% positive that tiny little jumper pad (it's not a jumper per se) is in the correct position on your late model A500 board? Your Agnus is a 1mb agnus, but there is only 512mb or ram soldered to your mobo. I bet if you were to solder more dips, your system would surely be 1mb chip.
Linky to what I am talking about. Be prepared to get your spectacles out. That jumper pad JP2, located between the CPU and Kickstart IS small. I see the revision for these docs are for a 5 board. Still, might be similar for your 6a. I'd be willing to bet the 6a's were pre-configured/etched for 1mb chip the addition of ram and you either need to add that mystery wire or dumb the mobo down to 512kb chip. If anyone could confirm, that would be grrrrreat!
The docs to enable 1mb chip ram say to do as follows: 'You have to cut the existing connection and solder the other two pads together'.
You may have to do the reverse of this in order to get your AdRam board to work.
BTW: Sega's Zektor rocks. A buddy of mine here in town happens to own that game :pint:
