M80 : How to use decimal numbers with default radix set to 16 ?

[Peter Onion]

I'm using M80 with ".radix 16" as I'm converting some of the hex-machine code I've been writing into assembler source code.

I've run into a little problem to do with using decimal numbers.  In the M80 manual Section1-4 "Numeric Constants" is shows "nnnnD" as a way to force a decimal number, but (for example) 0100D is a valid hex number so the assembler produces "100Dh" not "96h".

I know I can use the hex values I need, but was there ever a fix or work around for this "feature interaction" ?

PeterO

 

[Tom Storey]

What happens if you leave off the leading zero?

i.e. 100D

With some assemblers I have worked with, a leading zero means "treat the following digits as something other than decimal".

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[Peter Onion]

I've tried that, but no difference. :-(

PeterO

[Jaap van Ganswijk]

There are many ways to note non decimal numbers but I think you should use the C-standard. See Dennis and Richie. But when dumping memory you can't put 0x before every byte or word of course!

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[Peter Onion]

Just to be clear, I'm asking about how to use the Microsoft M80 assembler from 1979. I don't see any thing relevant to that in your answer.

PeterO

[Douglas Miller]

I think this is just an oversight/bug in M80. The answer is probably to not use ".radix 16" and just be specific about your constants.

Since M80 pre-dates the popularity of C, it does not support C-style constants.