Thank for your guidance, Ken. I will certainly start there.
Bob
-----Original Message-----
From: M100 [mailto:[email protected]] On Behalf Of Ken Pettit
Sent: Monday, September 10, 2018 1:58 PM
To: [email protected]
Subject: Re: [M100] Question 8085 Model T assembly - RST 4
Hey Bob,
A lot of this is already disassembled in the M100 Disassembly file in my
Personal Libraries section.
Ken
On 9/10/18 10:43 AM, Bob Pigford wrote:
> Thank you Ken and John.
>
> From John's info that the code for RST 4 starts at 0020h and go up to around
> 0027h so I can disassemble that to see what happens.
>
> Good stuff!
> Bob
>
>
> -----Original Message-----
> From: M100 [mailto:[email protected]] On Behalf Of Ken Pettit
> Sent: Monday, September 10, 2018 12:28 PM
> To: [email protected]
> Subject: Re: [M100] Question 8085 Model T assembly - RST 4
>
> 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
>>>
>>>
