IBM Personal Computer XT: Difference between revisions

Revision as of 07:49, 15 February 2024

Revision as of 06:32, 24 February 2024

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Submodels 568, 588, and 589 were used as basis for the [[XT/370]]; they had an additional (co-)processor board that could execute [[System/370]] instructions.<ref name="sim62">Personal Computer Family Service Information Manual (January 1989), IBM document SA38-0037-00, page 6-2</ref> An XT-based machine with a [[Series/1]] co-processor board existed as well, but it had its own System Unit number, the [[IBM 4950]].<ref>Personal Computer Family Service Information Manual (January 1989), IBM document SA38-0037-00, page 14-1</ref>

=== IBM XT 286 ===

{{pic|IBM Personal Computer XT 286 badge recreation.svg|upright=0.5|caption=XT 286 badge}}

In 1986 the '''XT 286''' (model 5162) was released with a 6&nbsp;MHz [[Intel 80286]] processor. Despite being marketed as a lower-tier model than the [[IBM Personal Computer/AT|IBM AT]], this system runs many applications faster than the ATs of the time with 6&nbsp;MHz 286 processors, since it has zero-[[wait state]] RAM.<ref name="Mueller92" />{{rp|95}}