cwathen
Experienced Member
Hi All,
First post!. I picked up a Microforce PLB-85 multifunction card from ebay to try and expand my 5150's RAM from 256K.
The board was advertised as having an RTC, game port, 2 serial ports, parallel port and 256K of extra RAM which would bring my 5150 up to 512K
I used the parallel port to connect with Interlink on another clone with a hard drive fitted so I have got at least something out of the card.
I'm not having any luck getting the extra RAM to work though. I've set SW2 on the 5150 to 512K but boot fails with a 201 error. I did try setting it to 288K just to see if any of the RAM on the card will function, still the 201 error.
The card came with a disk but no manual. The disk has a ramdisk driver and a utility for setting the RTC. I did try setting SW2 back to 256K so the system would boot and installing the ramdisk driver for the card in case it has been set up to use the extra RAM for a ramdisk but all that did was take memory from the 256K in the 5150, not use the extra RAM on the card.
There are 3 rotary switches and several jumpers on the board, but without a manual I have no idea of knowing if they're set correctly and I can't find any information about this card online.
Hopefully someone can help!
First post!. I picked up a Microforce PLB-85 multifunction card from ebay to try and expand my 5150's RAM from 256K.
The board was advertised as having an RTC, game port, 2 serial ports, parallel port and 256K of extra RAM which would bring my 5150 up to 512K
I used the parallel port to connect with Interlink on another clone with a hard drive fitted so I have got at least something out of the card.
I'm not having any luck getting the extra RAM to work though. I've set SW2 on the 5150 to 512K but boot fails with a 201 error. I did try setting it to 288K just to see if any of the RAM on the card will function, still the 201 error.
The card came with a disk but no manual. The disk has a ramdisk driver and a utility for setting the RTC. I did try setting SW2 back to 256K so the system would boot and installing the ramdisk driver for the card in case it has been set up to use the extra RAM for a ramdisk but all that did was take memory from the 256K in the 5150, not use the extra RAM on the card.
There are 3 rotary switches and several jumpers on the board, but without a manual I have no idea of knowing if they're set correctly and I can't find any information about this card online.
Hopefully someone can help!