Trump Card ROM

[dilwyn]

Anyone know the address of the Trump Card ROM in memory on a QL? Since a Trump Card takes RAM up to 896K in total, from base of screen memory right up to address $FFFFF, this means that probably the only place for the ROM is in the I/O area somewhere in $10000 to $20000, but which address exactly? I haven't got a Trump Card to test this, but presumably it could be found by searching this area for a QL ROM header $4AFB0001 string.

Reason for asking: got asked by someone how to make an image of a Trump Card ROM!

[Derek_Stewart]

Hi Dilwyn,

The Trump Card puts Toolkit 2 at $18000, which is Internal I/O, I am not sure if the Trump Card Rom goes there as well. It seems the only place left.

[tofro]

Dilwyn,

During the initialisation process and find of other extensions, the Trump Card's ROM is paged in at both $C0000 (this it where it has a proper ROM header and the initialisation routine) and $10000-$17fff (This is where the "runtime ROM" is located once everything is set up). Once everything is up and running, the TC ROM shows up in the latter address range, and RAM is paged in at $C0000

I'm not sure whether the ROM code that's ending up in the lower address range does have a proper QDOS ROM header as it is actually not needed.

That also means that you probably can't copy the TC ROM properly without referring to a raw EPROM copier.

(This wisdom is not mine, but has been explored by P. Harvey-Smith, one of the MAME emulator authors)

Tobias

[Derek_Stewart]

Probably the best way to copy the Trump Card ROM, would be to take out of the Trump Card and use a Eprom Programmer to copy the Rom Image.

Trump Card ROM images are 32K in length, so it could be read in the Rom Port with an adapter.