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Again the Question: Has anyone a better disassembled D32 ROM ? Better one as: https://gist.github.com/jedie/6573826 ? Caution! Sorry, but this listing is not complete. Just an example: Yes, you are right. I see this also by comparing it with the alternative from Phill and stew :o What's about to cr...

Whatever you expecting, I doubt that $8C37 does it in this way. A $942D it can be seen that A is loaded from $50 (destroys D) and B is stored as exponent ...??? I can't imagine this is a usable entry point... (referring to the disassembly you provided in the corresponding forums thread). If compare...

Stew, that's great. One of the best commented disassemblies I have seen. Yes, it's very good! i'm not yet clear how the D32 <-> D64 ROMDIFF.TXT worked. Jedie, did you check out Phill's disassembly? Yes, but it seems that the work from stew is better ;) I think there is a certain reluctance around t...

JeeK wrote:If D is loaded from $4500, the BASIC code has to poke the whole 16 bit value into &H4500 and &H4501.

Code: Select all

POKE &H4500,D2/256
POKE &H4501,255 AND D2

You are right. I changed it, see: https://gist.github.com/jedie/22dba94f5 ... /revisions

But also, doesn't work

JeeK wrote:All C6 opcodes should be D6 ...

I have changed all C6 to D6, see complete code: https://gist.github.com/jedie/22dba94f5b7534f946f9

EDIT: I testes bigger values and see:



Seems that "mantissa sign" switched correctly?

OK, i do a simple, boring move data: 1 PRINT:PRINT "TEST FLOATS IN FPA0 V0.1" 2 PRINT "(GPL V3 OR ABOVE)" 3 PRINT:PRINT "COPYLEFT (C) 2014 JENS DIEMER":PRINT 11 COUNT=14 20 LA=&H4000 ' LOAD / EXECUTE ADDRESS 25 PRINT "POKE MACHINE CODE TO: $";HEX$(LA) 30 PA = LA ' START ADDRESS FOR POKE 50 READ HB$ ...

new test code: 1 PRINT:PRINT "TEST FLOATS IN FPA0 V0.1" 2 PRINT "(GPL V3 OR ABOVE)" 3 PRINT:PRINT "COPYLEFT (C) 2014 JENS DIEMER":PRINT 11 COUNT=13 20 LA=&H4000 ' LOAD / EXECUTE ADDRESS 25 PRINT "POKE MACHINE CODE TO: $";HEX$(LA) 30 PA = LA ' START ADDRESS FOR POKE 50 READ HB$ ' HEX CONSTANTS 60 IF ...

I think the problem is that the you can't read the FPA0 without destroying it, because lines like this (from above example listing) EX =PEEK(&H004F) ' FPA0 EXPONENT uses the FPA0, too. Your machine-code subroutine has to save the FPA0 values to a safe place, from where they could be read from BASIC...

I try to create a BASIC test programm. But what's the address of the "Assign D to FAC" in D32 Basic? I tested $8C37 from Inside Dragon page 234 But without success: http://snag.gy/JevQh.jpg Source code of my test program: https://github.com/jedie/PyDragon32/blob/bf05deebeb041e1184dd94d914edf3e25692e...

Again the Question: Has anyone a better disassembled D32 ROM ? Better one as: https://gist.github.com/jedie/6573826 ?