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Thanks Phill. I have been running three 63C09E's, and a 63B09E in Dragon 32's, and 64's for more than twelve months without any problems. They use much less current, and always run super cool.

There's Robert Gault's EDTASM6309 patch. EDTASM is for the CoCo, but it wouldn't be difficult to convert it for use on the Dragon. There are also several cross assemblers available. Most of them are included with Roger Taylor's Rainbow IDE . I have attached a good selection of cross assemblers to th...

The Hitachi 63x09E is a direct pin-for-pin replacement for the 6809E found in the Dragon 32 and 64. Besides being a CMOS chip, which runs much cooler than the 6809E, the Hitachi 63x09E also contains an enhanced instruction set and additional CPU registers that bring significant performance beyond wh...

The Dragon 32 has a bug in the USR routine which causes USR1 to USR9 to be always read as USR0. The work-around is to use USR01-USR09 instead. This bug was fixed for the Dragon 64, but unfortunately USR0x now returns a Syntax Error causing a BASIC incompatiblity. As a result of this, games such as T...

It is possible that they plan to make some modifications to the BASIC ROM, but that costs nothing on the Dragon 64, because the ROMs can easily be copied to RAM in 64K (MAP1) mode. The only way a cartridge could possibly be useful, is if it were to add new hardware, like RAM, sound generator chip, e...

Agreed!

Here's the same utility for the Dragon 64, and 64K expanded Dragon 32. These work in exactly the same way, but the main routine is copied to high RAM to avoid being overwritten. Same instructions for use as above, except for the EXEC2630, which is no longer applicable. 0 'PEEKBIN64 V1.0 1 'FOR THE D...

I'm sorry Ciaran, I don't mean to be negative about this, but unless it can be explained to me in great detail, I just can't see how a game can work under XROAR or MESS Dragon 32/64 emulation, and not be usable on a real Dragon.

Regards,
Steve

If that were so, then the program (game) should work on a real Dragon?

Unless Ciaran, or Phill say differently, I can't see that being possible without modification to XROAR or MESS. IMHO, its not possible for any Dragon program running under XROAR or MESS to change the emulated hardware.