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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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8
pubs/pc/reference/intel/80286/b2_b3_info/README.md
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@ -1,12 +1,14 @@
---
layout: page
title: "Intel 80286 CPU Documentation: B-2/B-3 Steppings"
title: "Intel 80286 CPU Errata: B-2/B-3 Steppings"
permalink: /pubs/pc/reference/intel/80286/b2_b3_info/
---
Intel 80286 CPU Documentation
Intel 80286 CPU Errata: B-2/B-3 Steppings
---
[The following information is from a 7-page Intel document titled "80286(B-2/B-3) Information Sheet, 21 November 1984"]
### 80286 B-2/B-3 Steppings
This applies to S-spec #40093 and to S-spec #54012 of the 80286, since they contain a (B-2/B-3) stepping of the 80286.
@ -197,5 +199,3 @@ handled if the 80286 interrupts are always disabled before programming the inter
is performed no unmasked interrupt is active. The interrupt handler for IR7 can read ISR7 of the 8259A to tell if this was a real
interrupt on IR7. The ISR7 bit will be 0 if at the time the interrupt was acknowledged, no unmasked IR inputs of the 8259A were
active ("phantom" interrupt).
[This information is from a 7-page Intel document titled "80286(B-2/B-3) Information Sheet, 21 November 1984"]