V1.0 Features
This little computer will have a variety of features. Many of which has been stripped due to overcomplexity in an initial design.
Any feature claiming to be in "upper" address space of any kind means it is located above the 0-64K range in address space. The 0-64K is part of Zero page, or called direct page. For my description purposes, I am calling this the lower 64K, anything above this range is considered by me "upper". This is not a term you would probably see on other sites dealing with the 65816, but when describing this to some people, it was easier for them to understand "lower" and "upper", and it has rather stuck with my descriptions since then.
Here is the current list:
65816 CPU running at 4-10MHz
64K base ram, able to upgrade to near full 16 meg address space (some space taken by eprom, I/O, simple storage, etc., ~13.5 meg available to user)
8K base eprom containing basic drivers and monitor app.
128K - 256K of "upper" eprom space for added built in features
Custom set of FPGA's for address decoding allowing for efficient memory usage
Memory mapped I/O
2x20 Base text LCD to give general system info and current status
240x128 Graphic LCD w/ 40x16 text mode as main display
Multiple expansion slots, some via 6522's, some via direct memory maps for use of larger chunks of the memory space
2x RS232 ports
PS/2 keyboard interface
Real time clock
2 Meg battery backed up static ram to act as simple storage (is located in the upper portion of the 16 meg address space
11 Interrupts capable within the system with simple priority address decoding to handle interrupts in an efficient manner
Runs on a 5v DC supply