gbowne1
Newbie level 6
I am designing and building an amateur radio transceiver that works in the 5 Amateur radio bands from 1,800 KHz to 30MHz.
It is based on a 10-12 year old design that uses a 3 chip computer using the 80C31 and a 27C64. The EPROM is supposed to have 2,008 lines of assembly code.
I am redesigning the circut so that it is not so modular. The original design was designed to be housed in a small chassis. I now have two rackmount chassis that I wish to use with the project, one 12" high and the other 6" high. They both go about 18-22" front to back. The design is spaced over about 7 different PC boards. I would like to either slim it down to about 3 boards or design a planar system using ISA type 8 or 16 bit bus cards. Orignally there were 18 boards in the design, and would now cost over $150 ea. board totally assembled. I still think the best solution would be to desgin it on a 12" x 7, 8 or 9" board with the max. size bein 12" x 12" square.
I am intending on updating to 2006 technology. In the original documentation, I and other have found there are too many errors, missing parts, wrong part #s, and things that just don't seem to add up.
The original design used a 2 row, 16 character per row. LCD display that is backlit. I was planning on doubling that to 4 x 32.
I need to know what I could change the controller to in the update. I was thinking about the Amtel AT89C series or the PIC 16F or other controllers.
I can post text files of component lists from the original design or parts of the original text.
Greg
It is based on a 10-12 year old design that uses a 3 chip computer using the 80C31 and a 27C64. The EPROM is supposed to have 2,008 lines of assembly code.
I am redesigning the circut so that it is not so modular. The original design was designed to be housed in a small chassis. I now have two rackmount chassis that I wish to use with the project, one 12" high and the other 6" high. They both go about 18-22" front to back. The design is spaced over about 7 different PC boards. I would like to either slim it down to about 3 boards or design a planar system using ISA type 8 or 16 bit bus cards. Orignally there were 18 boards in the design, and would now cost over $150 ea. board totally assembled. I still think the best solution would be to desgin it on a 12" x 7, 8 or 9" board with the max. size bein 12" x 12" square.
I am intending on updating to 2006 technology. In the original documentation, I and other have found there are too many errors, missing parts, wrong part #s, and things that just don't seem to add up.
The original design used a 2 row, 16 character per row. LCD display that is backlit. I was planning on doubling that to 4 x 32.
I need to know what I could change the controller to in the update. I was thinking about the Amtel AT89C series or the PIC 16F or other controllers.
I can post text files of component lists from the original design or parts of the original text.
Greg