486NOW.EXE PS/2 486/Now!
disk w/drivers NOTE: The 486/Now!
does NOT require a compatibility plug! SW1
Settings Kingston 486/Now NOTE: SW1 is on the
underside. The upgrade board is the same for DX and
SX variants. The 486/33P(D/S)3-P70 is for the old style
8570-061
with the CPU socket below the expansion slots. The
486/33P(D/S)3-P70LP is for the newer 16 and 20MHz 8573-031/121
and the Japanese 5530. WARNING! Dr Jim sez: "Note that I have also seen the 20 MHz -061 planar used in the -121 model. It is important that you get the right model for your planar, as the orientation of the CPU socket is different and the upgrade will not physically fit if it is not the correct one". Carlyle Smith pops up out of lurk mode and sez NOTE: The 486/Now!
is not a clock multiplier like a Cx486DRx2. It runs the
CPU on the PCB at the rated speed. So although it has an
AMD Am486DX-40 on a 486/PD33, you set it to the system
speed with SW1. I do not know what happens if you set
SW1 to support a higher CPU speed. I guess that you
would be taking a chance with the RAM and support
chipset being fast enough. Differences SW1 Settings (Page 5 in installation manual) Model 1 2 3 4 8570 16 Long, 20 short Off On On 8570 16 short On On Off 8570 25 Long On On On 5530 25MHz On On On 8573 -031, 061, 121 Off On Off 8580 16 and 20 MHz Off Off On 8580 25 MHz On Off On All Models Fast Post On On Fast Post Off Off Note: SW1 Switch 4 default is ON, so the 486/Now will run POST at a fast 486 level. In some cases, an 8603 mouse error will occur because of the faster speed. Also if an IBM XGA adapter is installed in the system and a display problem occurs, changing Switch 4 to OFF should correct either problem. |