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Thread: Exidy Sorcerer CP/M logical device redirection

  1. #21

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    OK, testing the ANA command seems to work in a simulator so this will hopefully work.

    Code:
    nobyte    EQU    2        ;bit 1 is 'data received';
    ; stuff
    ;
        IN    0FDH        ;check RS232 status, result is put in A
        MVI    D,nobyte    ;00000010
        ANA    D        ;AND A with the D register
        JZ    LOOP        ;nothing received, bit 2 is clear so AND sets the Z flag
        IN    0FCH        ;get char received
    ;
    ; do stuff
    ;
        END
    I'll bolt that into the main code tomorrow and see what happens.
    www.binarydinosaurs.co.uk - UK home computer history
    Where RIFA capacitors come to die
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  2. #22
    Join Date
    Jan 2007
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    Why bother with D at all? Why not "ANI nobyte"?

  3. #23

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    I'm still learning It's surprising how little reference info can be found though a lot of it is clobbered by web server things and people asking questions about port 8080.

    In the end I found an 8080-Z80 converter (which couldn't do jumps for some reason) and changed the send/receive code but my floppy drives failed after I'd transferred the HEX file across to the Sorcerer, I suspect through heat since the whole kit had been on all night. I'll be back on it tonight.
    www.binarydinosaurs.co.uk - UK home computer history
    Where RIFA capacitors come to die
    facebook.com/binarydinosaurs

  4. #24
    Join Date
    May 2018
    Location
    Melbourne, Australia
    Posts
    71

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    Quote Originally Posted by Witchy View Post
    I'm still learning It's surprising how little reference info can be found though a lot of it is clobbered by web server things and people asking questions about port 8080.
    You know that if you prepend a minus character in the front of the search term you're not interested in you can eliminate pages containing that term from the search results ie '8080 assembler -port'.

  5. #25

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    Oh yes. It's always a good feeling when you minus out a load of search terms for CP/M stuff and it comes back with 'no results found'
    www.binarydinosaurs.co.uk - UK home computer history
    Where RIFA capacitors come to die
    facebook.com/binarydinosaurs

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