Hobby computer ZX Evolution!

WARNING! ZX Evolution sold and supplied by Vitaliy tetroid.nedopc.com, tetroid@inbox.ru.

Hobby computer ZX Evolution is Spectrum-compatible, but has some extension and use modern peripheries.

Design:
hardware: Vadim Akimov (LVD), Roman Chunin (CHRV), Dmitry Dmitriev (DDP).
software: Vyacheslav Savenkov (Savelij).

Features:

• Z80 3.5 MHz (classic mode)/ 7 MHz (turbo mode without CPU wait circles)/ 14 MHz (mega turbo with CPU wait circles);
• 4 Mb RAM, 512Kb ROM;
• MiniITX board (172x170mm), 2 ZXBUS slots, power ATX or +5,+12V;
• Based on fpga (Altera EP1K50);
• Peripheral MCU ATMEGA128;
• PS/2 keyboard and mouse support;
• Floppy (WDC1793) Beta-disk compatible interface, IDE (one channel, up to 2 devices on master/slave mode), SD(HC) card, RS232;
• Video out: RGB, VGA (scandoubler);
• Sound: AY, Beeper, Covox (PWM);
• Original keyboard and joystick support;
• Tape interface (in/out);
• Real-time clock.

List of monitors tested for compatibility with ZX EVolution is here.

Test program for monitors is here.

Documentation:

Sources (SVN) is on site svn.nedopc.com.

User documentation:

• User manual (revision C) here.

Hardware manual:

• Soldering manual (revision C) is here.
• Principal scheme (revision C) is here.
• Montage scheme (revision C) is here.
• Bill of material (revision C) is here.
• Hardware source (revision C) is here [PCAD2002] (not used for commercial purposes).

Warning! Description of start menu (EVO RESET SERVICE), programmers manual (for configuration BASECONF) and documentation about flashing ROM and MCU (flashing BOOTLOADER) place in "Configurations and ROM's"

Configurations and ROM's:

It content two types of ROM's:

• ROM image for flashing to EEPROM chip (29040) on ZX Evolution board;
• Configuration image for flashing to MCU (AVR) on ZX Evolution board (Configuration start on switch-on of ZX Evolution).

Alternative ROM's:

WARNING: These ROM's not designed in NedoPC. Please any questions mail to authors. NedoPC not support ROM's from other authors.

History:

Revision C:

Changes:

• Board size is miniITX (172x170mm);
• Remove onboard PAL-coder;
• Add AY-printer interface;
• Add controll of frequency multiplier;
• Add audio in (total 3 audio in);
• Use CPU Z80 in QFP;
• Remove RGB connector (connect via VGA);
• Add RS232-USB bridge;
• Remove AT power connector;
• Add connector for PAL coder.

Revision B:

Changes:

• Correct PS/2 connectors pattern;
• Correct OE on ICS501;
• Increase 78M05 pattern;
• Add jumper for disabling 12V on slots;
• Correct ATX power connectors pattern;
• Increase ferrites pattern;
• Decrease boards sizes;
• Remove jumper for enabling MCU programming;
• Correct 4148 pattern;
• Add ZXBUS 1st pin direction;
• Correct WD1793 reset;
• Correct FDD pattern (add key pin);
• Add texts to board ("HDD Led", "PWR Led", "ZX Keyboard/ZX Joystick", "Slot1", "Slot2");
• Correct location of VGA connector.

Documentation:

• Principal scheme (revision B) is here.
• Montage scheme (revision B) is here.
• Bill of material (revision B) is here.
• Add printer port: AY-printer.
• User manual (revision B) is here.
• Soldering manual (revision B) is here.
• Hardware source (revision B) here [PCAD2002] (not used for commercial purposes).

Revision A:

First version (not manufactured).

Documentation:

• Principal scheme (revision A) is here.
• Montage scheme (revision A) is here.
• Bill of material (revision A) is here.
• Hardware source (revision A) here [PCAD2002] (not used for commercial purposes).

Main page.

Email: nedopc@mail.ru, nedopc@yandex.ru.