Hello all,
I got a private message but was unable to respond because "YOU ARE NOT ALLOWED ACCESS TO THIS...whatever bull. F'd-up message board configuration.
So... do not PM me. You can send email to me at ZORak@gladucalled.com. {Flame Off}
That being said, here is my response to the message I received. I was asked to provide more information.
. . . , this is pretty much standard fare: a Z80, a 14.7 MHz generator w/ a 12 bit ripple counter, an SIO (the one that does BISYNC), a 40 pin header for an off board DMA interface, a place for a few 10 pin ribbon cable sockets, two RS-232 9 pin connectors, 32K ROM, 32 RAM, some kind of TTL 3-pin connector for a terminal emulator. Also, a PIO, probably not a CTC, and some DAC ADC parts.
I have some configurations and memory maps spec'd out. The biggest feature of the design will be the ability to configure the board for a wide variety of applications, populating only those parts which are needed. These applications range form a baby 256 byte front panel, toggle-switch computer to a CPM machine. I also have several applications planned that will require a GPS receiver, 240V contactors, navigational ephemeris data, and environmental sensors. Many of these devices will be off-board.
Right now, I want to get started with the heart of the system. I have built microprocessor system before. I can draw schematics with pencil and paper, but I want to start out with a format that can be used to generate a PCB.