25 lines
1.4 KiB
Markdown
25 lines
1.4 KiB
Markdown
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layout: page
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title: Microsoft Chart 2.02
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permalink: /disks/pc/apps/microsoft/chart/2.02/
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---
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Microsoft Chart 2.02
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---
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NOTE: The Microsoft Chart 2.02 disk is clearly not an original distribution disk.
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The disk image contains "SPERRY Personal Computer MS-DOS 2.11 version 1.11 Copyright 1981,82,83 Microsoft Corp."
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with a COMMAND.COM dated "3-16-87". It boots but then crashes when COMMAND.COM attempts to display the current date.
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COMMAND.COM appears to be loaded too high in conventional memory, because it builds the current date string above
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segment 0xA000, so when it attempts to print that string, DOS finds only garbage (0xFF bytes, and no terminating $).
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This suggests that either there is a mismatch between the IBMBIO.COM, IBMDOS.COM and COMMAND.COM files on this disk,
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or that there is something special about the BIOS found on a SPERRY computer that is critical to booting these files.
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I'm sure with further debugging we could find out one way or the other, but let's leave that for another day. It's not
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clear it's really worth the effort. To start, the IBMBIO.COM, IBMDOS.COM and COMMAND.COM files should be placed onto
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their own MS-DOS disk image and archived appropriately. A search for the rest of the SPERRY OEM distribution files
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should also be conducted.
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I would much rather post copies of original distribution disks here, but this is all we've currently got.
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