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Some improvements for FOOTBALL, including support for the 386 LOADALL instruction

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This commit is contained in:
Jeff Parsons 2016-01-28 22:22:36 -08:00
commit a5b9e0cae7
27 changed files with 4431 additions and 3981 deletions
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10
pubs/pc/reference/intel/80286/early_errata/README.md
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@ -1,12 +1,16 @@
---
layout: page
title: "Intel 80286 CPU Documentation: Early Errata"
title: "Intel 80286 CPU Errata: Early Problems"
permalink: /pubs/pc/reference/intel/80286/early_errata/
---
Intel 80286 CPU Documentation
Intel 80286 CPU Errata: Early Problems
---
[The following information is from an undated 15-page Intel document titled "Undocumented iAPX 286 Test Instruction".
NOTE: The initial reference to LOADALL as "opcode 0F04H" and the subsequent references to the "0F05H opcode" are exactly
as they appear in the original document. Whether or not they were mistakes is unknown.]
### Exceptions from Undefined Opcodes and String Instructions
The exception 13 handler will probably use a lookup table for the opcode byte of the instruction causing exception
@ -101,5 +105,3 @@ steppings of the 80286 and are fixed in later steppings of the 80286.
0-wait memory for the data values or be sure bit 0 of memory location 804H is zero. HOLD requests and processor
extension data transfers should be inhibited while [LOADALL](../loadall/) is running. Later steppings of the 80286 will correctly
load the MSW during [LOADALL](../loadall/) with HOLD and processor extension transfers.
[This information is from an undated 15-page Intel document titled "Undocumented iAPX 286 Test Instruction"]