LZ48/LZ49 (de)compressor for the Amstrad CPC

 Amstrad CPC, Development  No Responses »
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
388 Downloads
Details

Related posts:

  1. LZ4 decompressor code by Docent
  2. CPCtelera v1.1 – Amstrad CPC game engine for C developers
  3. CPCtelera v1.3 – Amstrad CPC game engine for C developers
  4. CPCtelera v1.4 – Amstrad CPC game engine for C developers
  5. CPCtelera v1.2 / v1.2.1 – Amstrad CPC game engine for C developers

LZ4 decompressor code by Docent

 Amstrad CPC, Development  No Responses »
Dec 312016
 

Docent wrote a decompressor the the LZ4 compression algorithm, which can be used on any Zilog Z80 CPU. The focus of the LZ4 compression algorithm is a fast decompression speed and a small decompression routine. The size of Docents version of the decompression routine is 219 bytes (raw decompression routine under 110 bytes) and it supports the legacy and the newest LZ4 format (except for framing).
You can download the latest version of the decompression code here or at the end of this news.

Features

  • decompresses files packed by lz4 command line packer and raw lz4 compressed data
  • supports legacy and the newest lz4 file format (except framing)
  • fully relocatable code
  • total size of 219 bytes size with raw decompression routine below 110 bytes
  • cpc firmware friendly (no alternate register set used)
  • ROM friendly – no self modifying code or additional memory required
  • simple interface – only start of file in memory and target memory destination required

 

LZ4 Decompressor
LZ4 Decompressor
LZ4-Decompressor.zip
7.0 KiB
282 Downloads
Details

Related posts:

  1. Sir Ababol 2 – game by the Mojon Twins
  2. CPCXfs and 2CDT for Windows and Linux
  3. Perfect Pix graphics tool
  4. SDCC Code::Blocks template v1.2
  5. New version of 2cdt

CPCRetroDev 2016 – game downloads

 Amstrad CPC, Development, Game  No Responses »
Nov 102016
 

Finally here they are: the files of the competition entries of the CPCRetroDev 2016. It is awesome to see so many entries which also seem to be higher in quality again this year. I guess you have already read the news about the winners in the different categories, so here are the results of all games. To download the game, click on the title.
Hopefully, the games will be available on cassette in the future on the CPCRetroDev homepage, too.

PositionImageGameGroupResult
1thumb_outlaws_retrobytesOutlawsRetroBytes(9.05) PRO Winner, Dinamic Mention, Gominolas Mention, Jon Ritman Nominee
2thumb_hirehare_cngsoftHire HareCNGSoft(8.98) PRO Second, Jon Ritman Mention, Dinamic Nominee
3thumb_virusdog_cpc-powerVirus DogCPC-Power(8.40) PRO Third
4thumb_dragonattack_bitplanetechnomantesDragon AttackBitplane Technomates(7.26) Cátedra Santander-UA Innovative Game Development Mention, PRO Nominee, Gominolas Nominee
5thumb_hair-boy_carlossevilaHair-BoyCarlos Sevila (7.09) PRO Nominee, Cátedra Santander-UA Engaging Gameplay
6thumb_thegrenadesconquest_subxplosionThe Grenades ConquestSub Xplosion(7.01) PRO Nominee
7thumb_ice-slider_egotripIce-SliderEgoTrip(6.82) Gominolas Nominee
8thumb_pingusoccer_panzPingu SoccerPanZ(6.77)
9thumb_amsthrees_glasnostcorpAmsthreesGlasnost Corp(6.72)
10thumb_mazeadventure_piterayoMaze Adventurepiterayo(6.56)
11thumb_elreinodelcolor_antoniocorpasEl Reino Del ColorAntonio Corpas(6.12) BASIC Winner
12thumb_retroboom_retroboomRetroboomRetroBoom(5.81)
13thumb_theleyendofanubis_corestudioThe Leyend Of AnubisCore Studio(5.68)
14thumb_tradworld_marTrad WorldMAR(5.35)
15thumb_firewallwars_navyxickenFirewall WarsNavy Xicken(5.33) Dinamic Nominee
16thumb_haciendocampanya_cocoteamHaciendo CampanyaCoco Team(5.29)
17thumb_ringringwarrior_aberrantesRing Ring WarriorAberrantes(5.15)
18thumb_killfield_paradoxKillfieldParadox(5.06)
19thumb_robobitgame_robobitRobobitgameRobobit(4.83)
20thumb_thegreatbattlesofmagistar_sn9495The Great Battle Of Magistarsn9495(4.78)
21thumb_elliot_approxbitElliotApproxbit(4.77)
22thumb_bananas-recovery_boomaBananas-RecoveryBOOMA(4.74)
23thumb_harrierrevenge_independienteHarrier RevengeIndependiente(4.54)
24thumb_proyectox_poisonousdepartmentProyecto XPoisonous Department(4.48)
25thumb_464crusader_ispira464crusaderISPIRA(4.45)
26thumb_fitzroy-and-the-power-wells_awerghFitzroy And The Power Wellsawergh(4.41) Jon Ritman Nominee
27thumb_nexttrack_asyncteamNext TrackAsync Team(4.33)
28thumb_cannibalator_trabitboyCannibalatortrabitboy(4.26)
29thumb_sidegun_radicalpandaSidegunRadical Panda(4.25)
30thumb_heromagic_irondevsHero MagicIron Devs(4.22)
31thumb_thelastfighter_patatasasadasThe Last FighterPatatas Asadas(4.06)
32thumb_gene_losrodriguezGeNeLos Rodriguez(3.92)
33thumb_deadwarrior_aberracionunoDead WarriorAberracion Uno(3.87)
34thumb_spacewar_equipobucleSpace WarEquipo Bucle(3.52)

 

Related posts:

  1. CPCRetroDev 2016 nominees
  2. CPCRetroDev 2016 results
  3. CPCRetroDev 2016 – over 1000 EUR in prices!
  4. 34 game entries for the CPCRetroDev game competition
  5. CPCRetroDev 2016 – The Oliver Twins join the jury

CPCRetroDev 2016 results

 Amstrad CPC, Development, Game  3 Responses »
Nov 072016
 

While we are still waiting for the download of the CPCRetroDev 2016 competition, we already know the winners of the different categories. I have added the Youtube videos from the ByteRealms channel, which show the different games, so you can already have a look at what you are waiting for :-).

PRO category

  1. Outlaws / Retrobytes Productions
  2. Hire Hare / CNGSoft
  3. Virus Dog / CPC-Power

BASIC category

  • El Reino del Color / Antonio Corpas

Gominolas: best music

  • Outlaws / Retrobytes Productions

Jon Ritman: technical development

  • Hire Hare / CNGSoft

Dinamic: innovative playability

  • Outlaws / Retrobytes Productions

Catedra Santander-UA special awards

  • Hair Boy / Carlos Sevila (gameplay, entertainment)
  • Dragon Attack / Bitplane Technomantes (innovative development)

Again a big thank you to all participants, who made this competiton great again. I still cannot wait to get my hands on the games and play them on the real machine.

Related posts:

  1. CPCRetroDev 2017 – over 1000 EUR in prices (again)!
  2. CPCRetroDev 2016 nominees
  3. CPCRetroDev 2016 – game downloads
  4. CPCRetroDev 2016 – over 1000 EUR in prices!
  5. CPCRetroDev 2016 – The Oliver Twins join the jury

CPCRetroDev 2016 nominees

 Amstrad CPC, Development, Game  No Responses »
Nov 012016
 

We are moving forward to the final results (and the downloads :-)) of the CPCRetroDev 2016, so it is time to announce the nominees for the different categories:

PRO category

  • Hair Boy / Carlos Sevila
  • Virus Dog / CPC-Power
  • Outlaws / Retrobytes Productions
  • The Grenades Contest / SubXplosion
  • Hire Hare / CNGSoft
  • Dragon Attack / Bitplane Tecnomantes

BASIC category

  • El Reino del Color / Antonio Corpas

Gominolas Special Mention to the Best Music

  • Dragon Attack / Bitplane Tecnomantes
  • Ice-Slicer / EgoTrip
  • Outlaws / Retrobytes Productions

Jon Ritman Special Mention to Technical Development

  • Fitzroy and the Power Wells / awergh
  • Outlaws / Retrobytes Productions
  • Hire Hare / CNGSoft

Dinamic Special Mention to Innovative Playability

  • To be announced shortly

You can have a look at the trailers and gameplays on the previous posting.

Related posts:

  1. CPCRetroDev 2016 results
  2. CPCRetroDev 2016 – game downloads
  3. CPCRetroDev 2016 – over 1000 EUR in prices!
  4. CPCRetroDev 2016 – The Oliver Twins join the jury
  5. 34 game entries for the CPCRetroDev game competition
 Older Entries  Newer Entries

By continuing to use the site, you agree to the use of cookies. more information

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.

Close