But as a quick anwer, RST 4 prints the ASCII character in the A register to the LCD or Printer.

Ken

On 9/10/18 9:26 AM, John Gardner wrote:
RSTs are software interrupts.  Intel's 8085 manual is a good

source for this stuff,  or you can look at this...

http://www.idc-online.com/control1/Interrupts_of_intel_8085.pdf

On 9/10/18, Bob Pigford <[email protected]> wrote:
Hello,



 From time to time when studying others' asm listings for ModelT's, I find
an
opcode called RST 4.

I have not yet found this documented anywhere.  What does RST 4 do?



Thanks for your help,



                 Bob



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