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Re: apple serial card
- Subject: Re: apple serial card
- From: kellihanb@aol.comDelete (KellihanB)
- Date: 16 Mar 2001 05:35:03 GMT
- Newsgroups: comp.sys.apple2
- Organization: AOL http://www.aol.com
- References: <98joph$7o6$1@merope.saaf.se>
- Xref: nntp.stanford.edu comp.sys.apple2:125083
>> Info on the 6850 chip is probably available. The next trick would be
>> to figure out where the registers are mapped; probably disassembling
>> the slot ROM would help there, if you can't find the information.
>
>You could also get the freeware utility ADT (Pau Guertin's original
>SSC version, not my CC verison) and then examine the assembler source
>file for the Apple II part of ADT. The "Send character" and "Receive
>character" routines are in their own subroutines, and comments in the
>source code will help you locate them. In this way you'll quickly
>find out where the registers are mapped - naturally they're mapped within
>that 16-byte address area assigned to each slot in the Apple II.
Or you could just go here:
http://home.swbell.net/rubywand/R031SSCPRG.TXT
Hope this helps,
Bret