S1564S/D-D1187-000 http://www.tyan.com
Addendum for S1564S/D
The 1564S/D Motherboard User’s Manual, Revision 1.0, does not
contain the CPU jumper settings for Cyrix 6x86MX processors. The
following chart should be used for setting the jumpers for that CPU
series.
Note that only processors with BUS speeds of 50, 60, and 66MHz are
supported by the 1564S/D boards. Thus, the following Cyrix 6x86MX/
IBM M2/SGS CPUs should not be used unless the BUS speed and
multiplier are adjusted.
The PR 200+ and PR 233+ processors come in both 66MHz and
75MHz versions. Check your CPU to see which type you have before
setting the jumpers.
CPU Model
Cyrix PR 166+
6x86MX
Cyrix PR 166+
6x86MX
Cyrix PR 200+
6x86MX
Cyrix PR 233+
6x86MX
BUS speed
& multiplier
60MHz x 2.5
66MHz x 2
66MHz x 2.5
66MHz x 3
VD0
ON
ON
ON
ON
VD1
OFF
OFF
OFF
OFF
VD2
OFF
OFF
OFF
OFF
VD3
ON
ON
ON
ON
VIO
ON
ON
ON
ON
J13
3-4
1-2
1-2
1-2
J19
ON
ON
ON
OFF
J20
ON
OFF
ON
ON
J21
OFF
OFF
OFF
OFF
CPU Jumper Settings
CPU Model
Default BUS speed
& multiplier (WILL
NOT WORK)
Default Physical
Speed
Adjusted BUS speed
& multiplier (WILL
WORK)
Adjusted Physical
Speed
Cyrix PR200+ 6x86MX
(IBM M2 PR200+)
(SGS PR200+)
75MHz x 2
150MHz
50MHz x 3
150MHz
Cyrix PR233+ 6x86MX*
(IBM M2 PR233+)
(SGS PR233+)
75MHz x 2.5
188MHz
50MHz x 4
200MHz
*due to CPU unavailability, the 50MHz x 4 setting has not been tested.
