Jazzmarazz
New member
My second Group printing is planned to be a development board for the z80!
Currently I have the schematic finished, the board layout is mostly complete and I am discussing the possibility of a bottom-half of a shell.
The concept is that of a CPU with ROM, RAM, various power input options and easy access to every Address, data, interrupt, and control pin of the z80. The board has headers on two sides very much similar to the arduino boards. I will later develop a "shield" to accommodate video, serial and ps/2 connectivity.
The way this works is that I wait to have ten people pay up front, and then they all get a board shipped to them once they arrive in my mail. I am sorry to say that I do not yet have prices, but the will be good.
Stay in touch.
Starting from the top left, we have;
Our power circuit with switchable USB or DC power input
56K RAM
memory mapping under RAM
z80
8K ROM
clock
resistors for resets and interrupts
more memory mapping
What do you all think?
The first stackable "shield" will contain composite video output, ps/2 keyboard input, serial and or USB depending on the method of population.
Cheers,
Jazz
Currently I have the schematic finished, the board layout is mostly complete and I am discussing the possibility of a bottom-half of a shell.
The concept is that of a CPU with ROM, RAM, various power input options and easy access to every Address, data, interrupt, and control pin of the z80. The board has headers on two sides very much similar to the arduino boards. I will later develop a "shield" to accommodate video, serial and ps/2 connectivity.
The way this works is that I wait to have ten people pay up front, and then they all get a board shipped to them once they arrive in my mail. I am sorry to say that I do not yet have prices, but the will be good.
Stay in touch.
Starting from the top left, we have;
Our power circuit with switchable USB or DC power input
56K RAM
memory mapping under RAM
z80
8K ROM
clock
resistors for resets and interrupts
more memory mapping
What do you all think?
The first stackable "shield" will contain composite video output, ps/2 keyboard input, serial and or USB depending on the method of population.
Cheers,
Jazz
