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echo: 80xxx
to: TIM HUTZLER
from: STEVEN READ
date: 1997-04-17 16:10:00
subject: Fs and gs registers

On 04-04-97 (13:51)
TIM HUTZLER wrote to ALL
About FS AND GS REGISTERS
TH> What is the purpose of the FS and GS registers?
Just additional segment registers that were added when the
80386 processor came out.
From the ASM.TXT in HELPPC21.ZIP file
================================================================
Assembler Programming Topics
:8086 architecture
Intel 8086 Family Architecture
   General Purpose Registers               Segment Registers
   AH/AL  AX  (EAX)  Accumulator            CS     Code Segment
   BH/BL  BX  (EBX)  Base                   DS     Data Segment
   CH/CL  CX  (ECX)  Counter                SS     Stack Segment
   DH/DL  DX  (EDX)  Data                   ES     Extra Segment
                                           (FS)    386 and newer
   (Exx) indicates 386+ 32 bit register    (GS)    386 and newer
=================================================================
The term 'Page Frame Segment' is from the LIM EMS specs and has
nothing to do with the 'FS' register.  Neither FS or GS appear
to have a name, they're just the 'F Segment' and the 'G Segment'.
Hope it helps,
Steve,  in western New York state (USA)
---
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