Monthly Archives: May 2012

Graphics: TREE ’81 by PIESIU

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And entries for the venerable ZX-81, just keep coming, this time PIESU submited this piece called TREE’81

  • Name: TREE ’81
  • Author: PIESU/AGENDA
  • Description: LO-RES graphic for the graphic compo
  • Resolution: 64×48 (Standard ZX-81 graphic resolution)
  • Platform: Sinclair ZX-81 (4KB RAM minimun)
  • Tools used: ZX PAINTYONE

The archive contains the native .p format file and the picture in .gif format.

Music: YERZMIX PART 6 by YERZMYEY

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YERZMYEY opens the music compo with music for the ZX-81 with 16KB RAM and ZONX compatible expansion (ie. ZXpand-AY or Mr-X)

  • Name: YERZMIX PART 6
  • Author: YERZMYEY
  • Description: Chiptune music for the ZX-81 music compo
  • Info: 3 chamnels, AY or YM chips
  • Platform: ZX-81 with 16KB RAM + ZONX compatible expansion
  • Tools used: SOUNDTRACKER

Author notes: Thx a lot to Andy Rea for preparing the tape version. And for creating the SoundTracker on ZX81, btw! 😉

The archive contains the native file in .p format and also an STC format versión for  AY-EMUL or ZXpand SD-cards .

Download: Yerzmyey-Yerzmix_6 (downloaded 17 times)

Or you can listen to the mp3:

[audio:Yerzmyey-Yerzmix_6.mp3]

Download MP3

Graphics: FOTO-APARAT by YERZMYEY

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And  the graphics compo is officialy open with this great ZX-81(4K) LO-RES graphic submited by YERZMYEY.

  • Entry name: FOTO-APARAT 😉
  • Author: YERZMYEY/HOOY-PROGRAM
  • Description: LO-RES image for the GFX compo
  • Resolution: 64×48 (standard hardware gfx resolution of ZX81).
  • Platform: Sinclair ZX-81 (minimun 4KB RAM)
  • Tools used: ZX PAINTYONE

 

The file contains the graphic in both native .p format (cargar mediante LOAD””) and .gif format.

 

 

 

 

Standard hardware configurations

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Due doubts that may generate the point in the BASIC games category rules which restricts the use of aditional hardware; we have compiled a list (by no means complete or exhaustive) of different maximun hardware configurations we consider standard for each platform.

Note: these restrictions mainly apply for the BASIC game category, check the end of this post for details about restrictions for graphic and music categories.

Apple II & compatibles (excludingIIGS):

  • Up to 128KB RAM
  • Tape unit or disk unit compatible with the Disk II controller
  • Joystick

Atari

400, 800, 600XL, 800XL:

  • Up to 64KB RAM
  • Tape unit or 810/1050 compatible disk drive
  • Up to 2 joysticks

65XL, 130XL:

  • Up to 128KB RAM
  • Tape unit or 810/1050 compatible disk drive
  • Joysticks

Commodore

PET:

  • Up to 32K RAM
  • Datasette or 4040 compatible disk drive

VIC-20:

  • Up to 21KB RAM
  • Datasette or 1540 compatible disk drive
  • Joystick

C16, Plus/4:

  • Up to 64KB RAM
  • Datasette, 1551 disk drive or 1541 compatible disk drive
  • Joysticks

C64:

  • No memory expansions allowed
  • Datasette  or 1541 compatible disk drive
  • Joysticks

C128:

  • No memory expansions allowed
  • Datasette or 1541 / 1571 compatible disk drive
  • Joysticks

MSX:

MSX1:

  • Up to 64KB RAM
  • 16 KB VRAM
  • Only PSG sound
  • Only TMS 9918 graphic modes allowed
  • Tape unit or MSX standard compliant disk drive
  • Joysticks

MSX2:

  • Up to 128KB RAM
  • Up to 128 KB VRAM
  • Only PSG sound
  • Graphis modes up to V9938
  • Tape unit or MSX standard compliant disk drive
  • Joysticks

Sinclair:

ZX80-ZX81 & compatibles:

  • Up to 16KB RAM
  • No sound
  • Only tape unit allowed.

ZX Spectrum, Spectrum+ & compatibles:

  • Up to 64KB RAM
  • Only beeper sound
  • Tape unit or microdrive commands compatible disk drive
  • Sinclair or Kempson Joystick

ZX Spectrum 128, Spectrum+2 and Spectrum+3:

  • Up to 128KB RAM
  • Beeper or AY-3-8192
  • Tape or disk unit
  • Joystick

Texas Instruments:

TI-99/4a:

  • Up to 32KB RAM
  • Tape or disk unit
  • Joysticks

About graphics and music categories:

These hardware restrictions apply only to the BASIC game category.

This allows, for example, to submit a music entry  created on a ZX-81 with a ZonX compatible expansion or a MSX graphic for the GFX9000 video card.
However not everything is allowed. The hardware to be used needs to be suficiently supported as to be included in emulators. This way even those without the specific hardware configuration needed to display/play your entry will be allowed to enjoy it.

 

Retrospectiva 2012 begins

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Welcome to another edition of Retrospectiva, the programming and digital creativity competition from Retrocomputacion.com.

For this edition we have some major changes in the categories and organization.
It has been decided to limit the competition to only 8-bit platforms, the TI-99/4A being the only exception to this rule.
The duration of the competition has been increased to 11 months so that everyone can participate at their own pace. Entries are accepted from May 14, 2012 to April 14, 2013.
Taking example from successful competitions like MSXdev and RGCD, entries will be made public as they arrive.

In this edition we also have the invaluable assistance of Fundación Museo ICATEC, which will award prizes to the winners of each category. Besides helping with the organization and diffusion of the competition.

 

 

The categories for this edition are three:

  1. BASIC Games: Create a game in BASIC for any 8-bit platform. Only standard hardware configurations supported. But unlike other competitions we accept any variant or dialect of BASIC available for your platform. For more information see the rules.
  2. Graphics: As in previous editions we allow any graphics mode available via hardware or software. But limited to 8-bit platforms.
  3. Music: Create music for 8-bit computers.

Please read and understand the rules of the competition before deciding to participate, the main points to consider:

Entries must be:

  • Original
  • Of your own creation
  • Unpublished prior the date of publication of this post.

 

Without further ado, just have to say:

We look forward to your participation!