[Coco] Assembler modifications and a super 6309 processor

jdaggett at gate.net jdaggett at gate.net
Tue Sep 8 20:37:49 EDT 2009

On 8 Sep 2009 at 11:55, William Astle wrote:

> Something else I've found lacking in the 6309 is a means to stack the 
> entire register set in the same order as interrupts do in native mode. 
> Maybe a PSH/PUL variant with a 16 bit register bitmap or a PSHrALL and 
> PULrALL type instruction? (It takes 3 instructions to do it currently, 
> totalling 6 bytes and a further 3 instructions at 6 bytes to remove the 
> registers from the stack.)


Something like the 68K where you have a PUSH/PULL instruction and a 16 bit postword 
that has a corresponding bit for each register to push or pull? 


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