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Int 10/AX=5F02h - Chips & Technologies '65530' BIOS - SET CLOCK -
AX = 5F02h
BH = what to set
02h dot clock
BL = new clock speed (see #00180)
03h memory clock
BL = new clock speed (see #00180)
04h set power-down register
BL = new value for power-down register (bits 3-0 only)
06h (404 clock chip) set control register
BL = new vlaue for control register (bits 5-0 only)
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<h2>Int 10/AX=5F02h
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<h3><font color=#C00040>Chips & Technologies '65530' BIOS - SET CLOCK</font></h3>
<PRE>
AX = 5F02h
BH = what to set
02h dot clock
BL = new clock speed <a href="rb-0338.htm#Table180" tppabs="http://www.ctyme.com/intr/rb-0338.htm#Table180">(see #00180)</a>
03h memory clock
BL = new clock speed <a href="rb-0338.htm#Table180" tppabs="http://www.ctyme.com/intr/rb-0338.htm#Table180">(see #00180)</a>
04h set power-down register
BL = new value for power-down register (bits 3-0 only)
06h (404 clock chip) set control register
BL = new vlaue for control register (bits 5-0 only)
06h (404A/B/B-ES clock chips) set control register PWRDN1
BL = new value for control register
07h (404A/B/B-ES clock chips) set control register PWRDN1
BL = new value for control register
FFh default dot and memory clocks<br>
<p><b>Return:</b><br>AL = 5Fh if function supported
AH = status
00h unsuccessful
01h successful
</PRE>
<p><b>See Also:</b>
<a href="rb-0334.htm" tppabs="http://www.ctyme.com/intr/rb-0334.htm">AX=5F01h</a> - <a href="rb-0337.htm" tppabs="http://www.ctyme.com/intr/rb-0337.htm">AX=5F02h"64300"</a> - <a href="rb-0361.htm" tppabs="http://www.ctyme.com/intr/rb-0361.htm">AX=5FA0h</a> - #00184
<PRE>
<p>
<a name=table180></a>
(Table 00180)
Values for C&T '65530' BIOS clock speed:
00h 12 MHz
01h 14 MHz
02h 16 MHz
03h 18 MHz
04h 20 MHz
05h 25 MHz
06h 28 MHz
07h 32 MHz
08h 36 MHz
09h 40 MHz
0Ah 45 MHz
0Bh 50 MHz
0Ch 56 MHz
0Dh 60 MHz
0Eh 65 MHz
0Fh 66 MHz
15h 34 MHz
</PRE>
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