Rasm Z80 assembler v1.3 [update 2020.11.24]

[roudoudou]

The purpose of proximity labels is to offer an entry point everywhere, without having unicity of labels


You can use a label .loop almost everywhere when you need it (but not directly after another .loop label)


BUT, if you need to jump to a proximity label out of the scope, just add the global reference -> routine1.loop, routine2.loop, ...


Anyway, that feature is a feature, there is no obligation to use it.

[Targhan]

Hmm, I'm note sure I understand, but is the following correct:
MySubCode:
 ld a,5
.loop
 dec a
 jr nz, .loop    --> it will jump one line above.
 ret


MySubCode2:
 ld b,10
.loop
 djnz .loop     --> it will jump one line above, NOT to the MySubCode.loop
 ret


Right?

[krusty_benediction]

yes. This is what I'm doing since years with vasm and asjamsplus
I use normal label as function (i.e. similar to a function in C language) name and local labels as branches inside the function (.i.e. similar to a label in C language)

Hmm, I'm note sure I understand, but is the following correct:
MySubCode:
 ld a,5
.loop
 dec a
 jr nz, .loop    --> it will jump one line above.
 ret


MySubCode2:
 ld b,10
.loop
 djnz .loop     --> it will jump one line above, NOT to the MySubCode.loop
 ret


Right?

[Targhan]

Not a bad idea indeed!

[roudoudou]

huge update, documentation is not finished yet (and the english version is still 10 versions late...)
update v0.87
- new proximity labels
- rasm is able to use variables inside label names
- INCBIN directive enhanced for WAV import as a CPC sample or DMA list
- REPEAT directive may export internal counter to a variable
- new directive IFUSED & IFNUSED
- new math operator ! for NOT
- new math function PSGVALUE
- rasm return 1 to shell when there is error(s)
- new options to export dependencies (makefile style)
- new option to define variable(s) from command line
- new option for extended error messages
- bugfix cases during preprocessing
- bugfix tags PAGE & PAGESET
- new autotests embedded in Rasm in order to reduce regressions

[GUNHED]

(and the english version is still 10 versions late...)

Please catch up, before you forget everything     

[roudoudou]

update v0.89, many bugfixes due to recent evolutions
- bugfix dependencies export
- bugfix in preprocessor
- simplify path of dependencies when possible
- enhanced ASSERT may PRINT additional parameters

[roudoudou]

update v0.90
- PROTECT directive does not increase automatic binary size anymore
- bugfix memory leak with proximity labels
- proximity label properties also for alias EQU
- label declaration may use formula (with tags), but only declaration for the moment

still working on doc. French doc partially updated and onlineEnglish online documentation done at 75%

[roudoudou]

doc updated

Documentation FR http://www.roudoudou.com/rasm/rasm_fr.html
Documentation EN http://www.roudoudou.com/rasm/rasm_en.html

[GUNHED]

Actually for EN this link works:
http://www.roudoudou.com/rasm/rasm_en.html

[roudoudou]

Actually for EN this link works:
http://www.roudoudou.com/rasm/rasm_en.html

Thanks! Again this shitty editor  I fixed my postS

 

[HAL 6128]

@roudoudou :
RASM says during assembling that after e.g.

Code: [Select]

LD BC,#FF63 and an

Code: [Select]

OUT (C),A it is truncating the value #FF63 to #63. Does it really truncate it?

[roudoudou]

@roudoudou :
RASM says during assembling that after e.g.

Code: [Select]

LD BC,#FF63 and an

Code: [Select]

OUT (C),A it is truncating the value #FF63 to #63. Does it really truncate it?

sorry i cannot reproduce what you say with ld bc,#FF63 and out (c),a

must be another line

have you some DB/DEFB around?

[HAL 6128]

Hmm, sorry. I found the error I made.
I've defined a variable:

Code: [Select]

VALUE EQU #FF63
…
LD A,0
LD BC,#FF63
OUT (VALUE),A
I had forgot to rewrite the out command.

[roudoudou]

update v0.91
- bugfix school case with crunched block
- bugfix proximity labels when using loops or macros
- bugfix imbricated IFUSED/IFNUSED
- new directive FAIL will print a message before exiting with an error flag
- label usage may use formula
- escaped codes support in strings (disregarding the current charset)
- PRINT directive may compute formula in strings when using curly brackets
- RUN directive may set the gate array configuration for snapshots
- generated label with negative index will trigger an error
- overriding an alias with a variable will trigger an error
- overriding a variable with an alias will trigger an error
- missing ENDIF at the end of the source will trigger an error

[Ast]

Rasm forever ! May the french soccer team win tonight !

[roudoudou]

Did not see the match, i was busy fixing PAGE tag -> v0.92 update 

[GUNHED]

Hi!

In RASM there is this code example:

ld (iy+1),PDATE
ld (iy+2),PDATE>>8

PDATE equ 1234

How would this be written in Maxam (I need this for quick testing)

[roudoudou]

replace >>8 by /256

Note: In rasm mode /256 will round upper, in maxam mode this will truncate and may lead to another result

[GUNHED]

Thanks, I thought about /256. Maxam does it like RASM. But...

ld (iy),variable_of_16_bit

What does it do in RASM? Does it only write the lower 8 bits? Maxam produces an error.

Sorry for bugging, but in the example before, it would write the hi-byte first, and then the low-byte. Shouldn't it the other way around?

RASM is really full of new features, lot's of stuff to learn ;-)

[roudoudou]

Thanks, I thought about /256. Maxam does it like RASM. But...

ld (iy),variable_of_16_bit

What does it do in RASM? Does it only write the lower 8 bits? Maxam produces an error.

Sorry for bugging, but in the example before, it would write the hi-byte first, and then the low-byte. Shouldn't it the other way around?

RASM is really full of new features, lot's of stuff to learn ;-)

with rasm you can do

Code: [Select]

ld (iy+0),lo(variable_of_16_bit)
ld (iy+1),hi(variable_of_16_bit)or

Code: [Select]

ld (iy+0),variable_of_16_bit&#FF
ld (iy+1),variable_of_16_bit>>8there is no other shortcut but you can also do a macro

Code: [Select]

macro LDIY16 valuetoput
ld (iy+0),lo({valuetoput})
ld (iy+1),hi({valuetoput})
endm

[GUNHED]

Cool! Thanks!

[roudoudou]

update v0.93
- bugfix RUN gate array configuration
- overriding an alias with a label will trigger an error
- PRINT directive may use escaped chars in strings
- tags BANK,PAGE,PAGESET may be used with current adress $

A bug may still occur with proximity labels mixing macro, generated names (but i cannot reproduce it)

[roudoudou]

update v0.94
- bugfix using macro parameter inside print quote
- bugfix multiple memory leak with tag replacement
- bugfix command line side effect with wrong option
- better hack in expression calculator for expression beginning with negative value
- better equality processing in expression calculator
exewin32 does not have all the fix, will be available monday since i need a 32 bits compiler i do not have at home

[roudoudou]

update v0.95
- allow spaces in tags inside strings with PRINT directive
- display warning if you try to export symbols or breakpoints with snapshot version 2
- proximity label beginning with BRK will generate an exportable breakpoint
- new enhanced LD instructions documented here http://www.roudoudou.com/rasm/rasm_en.html#Instructions