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Info for al520ex


====== Patisonic Aleste 520EX (1993) ======




===== Features =====

* CPU: Zilog Z80A @ 3.5/4/7/8MHz
* RAM: 512kB, expandable to 2MB
* Audio: AY-3-8912
* Video: 6845 CRTC
* Video modes: 160x200x16, 320x200x4, 640x200x2, 320x200x16, 640x200x4, 256x212x16, 512x212x4
* Palette: 64 colours (6-bit RGB)
* RTC: MC146818



===== Usage =====

To start in CPC mode, hold SHIFT while booting.

To enter system setup, hold CLR (mapped to Backspace, by default) while booting.

Insert a bootable Aleste MSX disk image to boot to MSX-DOS. Run an executable (*.com) program by typing the filename (without the .com extension) at the A> prompt and pressing ENTER.



===== Known Issues =====

Supports only MSX format disk images currently.

RTC emulation is not complete, time is not always constantly updated on screen in system setup.

The Magic Sound expansion is not emulated.



===== History and Trivia =====

The Aleste 520EX is a Russian clone of the CPC6128, that expands existing video mode and can run MSX-DOS.

It also adds an MC146818 RTC/NVRAM, an Intel 8253 timer and the "Magic Sound" board, which is a 4-channel DMA-based sample player.

Finally, it includes a software emulation of the MSX2 VDP, used in the ports of MSX games.

//(info from MESS driver)//



===== Links =====

* [[http://aleste520.narod.ru/index.html]] (Some pages are in Russian)
* CPC Wiki link -- http://www.cpcwiki.com/index.php/Aleste_520EX

Generated on Sun Jul 19 10:17:28 2009