Jul 242017
 

Roudoudou released a new version of his Zilog Z80 cross-assembler called Rasm. Of course it supports all the undocumented opcodes, but beside of that, you can use conditional macros, a floating point engine and several mathmatical functions. A special feature is the possibility to create a cartridge for the Amstrad Plus or the Amstrad GX4000 directly by assembling your source code and you can automatically add an AMSDOS header to your binaries. It also supports crunched sections (the coded will be loaded and crunched on the fly) for LZ48, LZ49, LZ4, ZX7, and Exomizer. It has also a compatibility option to support the widely in the Amstrad CPC used MAXAM syntax. You can download and discuss it at the CPCWiki forums and at the end of this news.

Changes in v0.57

  • more flexible preprocessor with macro parameters
  • new label prefix tag {BANK} to get the bank where is located a label

 

Mar 202017
 

Roudoudou released a brand new Zilog Z80 cross-assembler that targets the Amstrad CPC. Of course it supports all the undocumented opcodes, but beside of that, you can use conditional macros, a floating point engine and several mathmatical functions. A special feature is the possibility to create a cartridge for the Amstrad Plus or the Amstrad GX4000 directly by assembling your source code and you can automatically add an AMSDOS header to your binaries. However, it currently does not support the Maxam assembly syntax.
The latest version contains a lot of bugfixes (local labels, macro, label tree, alias, …) and a documentation in french and english. You can download and discuss it at the CPCWiki forums and at the end of this news.

Update 21.03.2017
Roudoudou released a new version v0.42 with the following changes:

  • allow old style label declaration with a starting dot
  • allow useless A, register form with ADC, ADD, SBC, SUB
  • extended syntax for 8bits index registers
  • documentation FR/EN updated

Update 31.03.2017 – Rasm v0.48

  • bugfix of label calculations when placed after a LZ48/LZ49 block (there is a buf left with more than one LZ section in the same ORG)
  • directives SWITCH/CASE/DEFAULT/ENDSWITCH added
Rasm - Z80 assembler
Rasm - Z80 assembler
rasm_v040.zip
Version: v0.40
234.8 KiB
46 Downloads
Details
Rasm v0.42 - Z80 assembler
Rasm v0.42 - Z80 assembler
rasm_v042.zip
Version: v0.42
237.4 KiB
43 Downloads
Details
Dec 312016
 

Roudoudou worked on a compressor / decompressor which uses the LZ48 / LZ49 compression algorithm on the Amstrad CPC and released his work in the CPCWiki forums. The compressor is inspired by the LZ4 compression algorithm of Yann Collet and the modifications fits well to the Z80 CPU of the Amstrad CPC. The advantage of this compression method is, that the decompression code is very small (83 bytes) and very fast. The disadvatage is that there are other compressors which feature a better compression ratio, but require more memory and more time for decompression as well.
You can get more information about the modified algorithm and download the assembly source from the CPCWiki forums. You can also find a version for SDCC / CPCtelera and binary files for Windows there.

LZ48/49 (de)compressor
LZ48/49 (de)compressor
LZ48-49-de-compressor.zip
16.5 KiB
71 Downloads
Details
May 212008
 

Roudoudou released a new intro which shows a 3D rendered face lighted by one moving light. You can download it from Cpcscene.com.

asmintro1

ASM Intro1
ASM Intro1
ASM_Intro1_(Roudoudou).zip
24.2 KiB
233 Downloads
Details

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