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Updated BIOS and BASIC information

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This commit is contained in:
Jeff Parsons 2016-04-17 08:49:37 -07:00
commit 217c0c0f49
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17
devices/pc/rom/5150/basic/README.md
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@ -6,18 +6,21 @@ redirect_from:
- /devices/pc/basic/
---
BASIC ROMs
IBM PC BASIC ROMs
---
The project contains the following BASIC ROMs:
The project contains the following IBM PC BASIC ROMs:
* [BASIC 1.00](BASIC100.json)
* [BASIC 1.10](../../5160/basic/BASIC110.json)
* [IBM BASIC C1.00](BASIC100.json)
* [IBM BASIC C1.10](../../5160/basic/BASIC110.json)
These built-in versions of BASIC were also referred to as *Cassette BASIC*, because no disk drive was required.
These built-in versions of BASIC were also referred to as Cassette BASIC, because no disk drive was required.
Only the original IBM PC (Model 5150) actually provided a cassette interface, but IBM continued to use that
name to describe the built-in BASIC at least up through the IBM PC AT (Model 5170).
name to describe the built-in BASIC, at least up through the IBM PC AT (Model 5170).
Both versions of Cassette BASIC where 32Kb and spanned physical addresses 0xF6000-0xFDFFF. They were produced by
Microsoft, and unlike the IBM PC BIOS ROMs, no source code listings of these BASIC ROMs were ever published.
Here's an [IBM PC Machine](/devices/pc/machine/) XML excerpt that shows how to include a BASIC ROM:
<rom id="romBASIC" addr="0xf6000" size="0x8000" file="/devices/pc/rom/5160/basic/BASIC110.json"/>
<rom id="romBASIC" addr="0xf6000" size="0x8000" file="/devices/pc/rom/5150/basic/BASIC100.json"/>