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The '''Aleste 520EX''' is a [[Clones|clone]] of the Amstrad CPC 6128 developed 1993 Patisonic in Russia in the early 90ies Omsk (Siberia).

''The following clone has not been confirmed. There is only one source ([httpAdditionally to the standard CPC6128 features, it includes a number of additional features://aleste520.narodOptional 64-color palette, doubled color depth (eg.ru]16 color at high 320x200 resolution) available, battery-backed Real Time Clock, 8bit printer port, 512Kbyte RAM (of which, only 192K are accessed in cpc-style standard fashion, ie.like a 64K cpc with 128K dk''tronics expandion), expanded keyboard matrix with 10 additional keys, extended Expansion Port (with additional pins for DMA support).

At 1993, a company located at Omsk (Siberia) desighed and manufactured a clone of CPC6128 computerThe Aleste is quite rare. The name only existing photos are from http://aleste520.narod.ru]. According to Patisonic themselves, they '''"produced several dozens of computer "Aleste 520EXthe model, some of them was in 'kit' form"'''.  The computer works with Amstrad [[CP/M]] and MSXDOS as well. Thats because Aleste computer have two modes one (note: MSXDOS is Amstrad modea CP/M clone, but second [[which uses a FAT filesystem, as used on MSX]] mode have different memory management and additional graphics modesMS-DOS computers, instead of the normal CP/M filesystem).

==MSX Special Mode==

The 8253 timer is used to generate transmit and receive clock for serial. In addition the cursor CURSOR output of the CRT CRTC is connected as a trigger which is then connected to the colour hardware. So the CRTC cursor can be used to switch colours by the hardware.

At the boot time computer loads BIOS and MSXBDOS (BIOS for Disc BIOS) from a bood disc. After that COMMAND.COM (MSXDOS). Computer can bott from RAM disc as well. Computer go to AMSTRAD mode when "Shift" is pressed while reset.

Additional sound board MagicSound is a four channels smapler. Each channel has DMA playback. Supports 8 bit per sample and , 6 bits of volume per channel, and 16bit samplerate timer per channel. Computer uses the board for playing STM (Scream Tracker) files. The sample's data containg at the Aleste's memory, that is possible because Aleste have support DMA access from external board to whole Aleste's memory.