feustel@netcom.COM (David Feustel) (06/10/91)
You probably need to enable the A20 address line. -- David Feustel, 1930 Curdes Ave, Fort Wayne, IN 46805, (219) 482-9631 EMAIL: feustel@netcom.com or feustel@cvax.ipfw.indiana.edu
ephram@violet.berkeley.edu (Ephram Cohen;B50 Tolman Hall;25352;4156548978;LE56) (06/11/91)
In article <8980@drutx.ATT.COM> rbj@druhi.ATT.COM (Russell B. Jorgensen) writes: >I've been experimenting around with writing some protected mode programs >for my PC/AT (iAPX286 processor w/ 4 Mb). But, I've run into a snag >when accessing memory over 1Mb. Basically, both the 1st and 2nd meg of >memory seem to be physically the same, the 3rd and 4th meg of memory the >same, etc. I can not say for sure but it may be that address line 20 on the buss is disabled. There should be a function call to enable address line 20. You should mention what kind and version of BIOS you have. -- We must prevent those commies from compromising the integrity of our precious bodily fluids. -Gen. Jack D. Ripper Ephram Cohen ephram@violet.berkeley.edu 466 44th St. #1 3210 Tolman Hall