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Z80 & 68k Assembly =>
z80 & ez80 Assembly
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fougere
Advanced Newbie
Joined: 07 Aug 2009
Posts: 56
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 Posted: 30 Dec 2009 05:41:30 pm Post subject: |
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| I have been using TASM (Telemark Assembler) to compile my z80 programs for quite some time. However, I noticed that TASM does not have .dd/.dword or .dq/.qword directives for the insertion of large numbers (ie, greater than $FFFF) as data into programs. Does anyone know of an assembler that does?? Thanks. |
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FloppusMaximus
Advanced Member
Joined: 22 Aug 2008
Posts: 472
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| Posted: 30 Dec 2009 09:00:04 pm Post subject: |
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| I think zmasm has a dl directive; miniasm does, and I know I've seen other assemblers that have something equivalent. But most assemblers use 32-bit math anyway, so you can define dl (or dd, or whatever you want to call it) as a macro. I don't know of any Z80 assembler that uses 64-bit math, though. |
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magicdanw
pcGuru()
Calc Guru
Joined: 14 Feb 2007
Posts: 1110
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| Posted: 30 Dec 2009 09:07:06 pm Post subject: |
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| I used gcc for a class last semester, and it was great. However, I don't know if it can target z80. I guess it probably can't, cause if it could, people would be using it already. |
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Galandros
Active Member
Joined: 29 Aug 2008
Posts: 565
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| Posted: 31 Dec 2009 05:02:33 am Post subject: |
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FougereRapide wrote: I have been using TASM (Telemark Assembler) to compile my z80 programs for quite some time. However, I noticed that TASM does not have .dd/.dword or .dq/.qword directives for the insertion of large numbers (ie, greater than $FFFF) as data into programs. Does anyone know of an assembler that does?? Thanks.
You could macro in .dd/.dword and .dq/.qword in TASM or SPASM (other assembler) or change the source code of SPASM.
Code:
;SPASM macros (not tested)
#macro qwordm(value)
.dw value/256/256
.dw value & $0000FFFF
#endmacro
;this make SPASM accept things like: " .dq 2143541", just like a directive
#define .dd qwordm(
#define .dword qwordm(
;TASM (not tested and I don't do macros for TASM...)
#define qword(value) .dw value/256/256 \ .dw value & $0000FFFF
;usage: qword(92746616)
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fougere
Advanced Newbie
Joined: 07 Aug 2009
Posts: 56
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| Posted: 31 Dec 2009 10:51:02 am Post subject: |
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i may be wrong, but, to make it so that the LSB is first, shouldn't you reverse the order of the macro?, ie:
Code:
.dw value & $0000FFFF
.dw value/65536
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Galandros
Active Member
Joined: 29 Aug 2008
Posts: 565
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| Posted: 31 Dec 2009 03:36:56 pm Post subject: |
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FougereRapide wrote: i may be wrong, but, to make it so that the LSB is first, shouldn't you reverse the order of the macro?, ie:
Code: .dw value & $0000FFFF
.dw value/65536
z80 is little endian, I have to think to know how it should be... But you got the idea of how the macro should be. |
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fougere
Advanced Newbie
Joined: 07 Aug 2009
Posts: 56
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| Posted: 31 Dec 2009 03:50:57 pm Post subject: |
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| Thanks. It works perfectly! Actually, I don't think the "& $0000FFFF" is really necessary because the .dw automatically takes just the lower word. |
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