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computers / comp.sys.ibm.ps2.hardware / Re: Who needs CBASIC?

SubjectAuthor
* Who needs CBASIC?Louis Ohland
`* Re: Who needs CBASIC?IBMMuseum
 `* Re: Who needs CBASIC?Louis Ohland
  `- Re: Who needs CBASIC?Tomas Slavotinek

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Who needs CBASIC?

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From: ohland@charter.net (Louis Ohland)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Who needs CBASIC?
Date: Sun, 26 Nov 2023 09:38:01 -0600
Organization: csiph.com Internet News Service
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 by: Louis Ohland - Sun, 26 Nov 2023 15:38 UTC

Since CBASIC is such a kludge, what can we do with the 32KB?

Re: Who needs CBASIC?

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Subject: Re: Who needs CBASIC?
From: ibmmuseum@gmail.com (IBMMuseum)
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 by: IBMMuseum - Tue, 28 Nov 2023 03:00 UTC

> Since CBASIC is such a kludge, what can we do with the 32KB?

I like CBASIC, but it can be replaced by QBasic from disk - however, you're going down a rabbit-hole to re-write (C)BIOS. Unless you plan to run OS/2, just use the ABIOS areas.

Re: Who needs CBASIC?

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From: ohland@charter.net (Louis Ohland)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Re: Who needs CBASIC?
Date: Mon, 27 Nov 2023 21:22:21 -0600
Organization: csiph.com Internet News Service
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 by: Louis Ohland - Tue, 28 Nov 2023 03:22 UTC

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].

This is all related to replacing a floppy during boot at a very
primitive level... Can you hear the drums?

IBMMuseum wrote:
>> Since CBASIC is such a kludge, what can we do with the 32KB?
>
> I like CBASIC, but it can be replaced by QBasic from disk - however, you're going down a rabbit-hole to re-write (C)BIOS. Unless you plan to run OS/2, just use the ABIOS areas.
>

Re: Who needs CBASIC?

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From: slavotinek@gmail.com (Tomas Slavotinek)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Re: Who needs CBASIC?
Date: Wed, 29 Nov 2023 23:32:45 +0100
Organization: csiph.com Internet News Service
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 by: Tomas Slavotinek - Wed, 29 Nov 2023 22:32 UTC

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).

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