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GR8BIT: the Real Engineering Experience
E-mail: infoatgr8bit.ru [S]
Phone: +7 916 440 6541

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GR8BIT sample pictures

GR8BIT platform New designs GR8BUS master

Sample pictures* of the GR8BIT

These are the cool stuff you will have at the end of the assembly stage. Just check them all again, put them all together, and turn it on. And that's when real fun begins.

GR8BIT main board
GR8BIT main board
GR8BIT Z80 CPU board
GR8BIT Z80 CPU board
GR8BIT memory board
GR8BIT memory board
GR8BIT video board
GR8BIT video board
GR8BIT I/O board
GR8BIT I/O board
GR8BIT Prototype
GR8BIT Prototype
Assembled GR8BIT (1)
Assembled GR8BIT (1)
Assembled GR8BIT (2)
Assembled GR8BIT (2)
Troubleshooting GR8BIT
Troubleshooting GR8BIT
The GR8BOOK
The GR8BOOK
Metal Gear 2
The Legend: Metal Gear 2
Designer: Hideo Kojima
The Star: Hideo Kojima
* Please note that actual boards you receive within your GR8BOX may look different but will have declared functionality.

GR8BIT platform New designs GR8BUS master Top

New GR8BIT designs

Since its inception GR8BIT has slightly evolved. Below you will find the pictures and some details about the new boards. There's also newer slot board with additional power source selection, but there're no pictures for it yet.

New GR8NET video board (1)
New GR8NET video board (1)
New GR8NET video board (2)
New GR8NET video board (2)

The new video board is having a lot of SMD components, and it is a real challenge to take! You will need small soldering iron, thin solder (0.5 mm) with flux inside it, and, for sure, magnifier or microscope. This board features improved RGB and composite outputs circuit using AD725, and S-video output. It can automatically detect frame rate and adjust encoder operating mode accordingly. RGB output pinout used is the same as on original video board.

New GR8NET I/O board (1)
New GR8NET I/O board (1)
New GR8NET I/O board (2)
New GR8NET I/O board (2)
New GR8NET I/O board - backside
New GR8NET I/O board - backside

The new I/O board is having Nextor kernel on it, with driver and microcontroller working together supporting 3.5" AT drives formatted with 1.44M and 720k capacities, and 5.25" drives formatted with 1.2M and 360k capacities (but using 1.2M drive). HDD subsystem is similar to original, but can detect ATAPI devices like CD-ROM (however GR8BIT/MSX can not use it so far). Joystick ports are having current protection circuit buzzing and turning LED on when overcurrent on any joystick port is detected. The board also has some SMD components, but less in amount than on the video board above.


GR8BIT platform New designs GR8BUS master Top

Sample pictures** of the GR8BUS master board

This board adds multimedia and multi-processing capabilities to the GR8BIT. At this stage is not designed to be assembled in the field.
Core controller: ALTERA Cyclone III (EP3C25Q240).
Configuration options: JTAG and Active-serial using ByteBlaster-II interface.

GR8BUS master board (1)
GR8BUS master board (1)
GR8BUS master board (2)
GR8BUS master board (2)
GR8BUS master board (connectors)
GR8BUS master board (connectors)
** GR8BUS master board prototype. Is not included within the GR8BOX.


GR8BIT™, GR8BOOK™, GR8BUS™, GR8BOX™, GR8STORM™ and GR8NET™ are trademarks copyright © 2010-2021 Eugeny Brychkov. For copyright statement, privacy and cookie matters, and credits please refer to our policies.