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   comp.sys.ibm.ps2.hardware      Discussing IBM PS/2 hardware      42,985 messages   

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   Message 42,272 of 42,985   
   Tomas Slavotinek to Louis Ohland   
   Re: Who needs CBASIC?   
   29 Nov 23 23:32:45   
   
   From: slavotinek@gmail.com   
      
   On 28.11.2023 4:22, Louis Ohland wrote:   
   > Dave, how are CBASIC and CBIOS related? I _ASS U MEd_ that CBASIC is not   
   > part of the Compatibility BIOS [CBIOS], and deleting the 32KB is like   
   > removing tonsils [but without ice cream].   
      
   The two are almost completely unrelated. Well, POST calls Int 18 handler   
   to invoke BASIC. And I assume ROM BASIC uses BIOS interrupt handlers for   
   I/O and what not, but that's probably about it.   
      
   The ROM BASIC block can be safely removed if the Int 18 handler is   
   tweaked accordingly (only applies to pre-IML machines). As far as I know   
   BASIC/BASICA.COM are the only programs that require ROM BASIC to run, so   
   no need to worry about compatibility issues.   
      
    > This is all related to replacing a floppy during boot at a very   
    > primitive level... Can you hear the drums?   
      
   The 32 K space could be used to extend POST/BIOS capabilities on the   
   older machines. A ROM-resident setup would be cool too (with support for   
   only a few selected adapters probably... but enough to configure most   
   systems).   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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