FORBES@rs1.vuw.ac.nz (FORBES) (07/18/90)
Hi there, I am the proud owner of that rare beastie, the IBM PC JX - or PC Jr as it is sometimes known. I understand it is similar to the PC but aimed at the home/games market and so has one or two, rather vital, differences. The one causing the most hassle is the graphics : most PC's have their graphics starting at a fixed address (HB800 or something) - unfortunately the JX puts it inside the resident DOS section in RAM on the nearest 16K, 32K or 64K boundary (depending on the particular graphics configuration choosen) above any other drivers etc. All this means programs which write directly to the graphics area instead of using BIOS or DOS go splat on the JX. That is the limit of my knowledge so if any of you PC gurus could help me out with either a patch for these programs or something to intercept and re-direct graphics images to the right memory area, it would really be appreciated. In view of the differences ah la graphics, I'm also concerned about the compatiability of hard drives. I'm looking at buying one for the JX and would appreciate any info on which are suitable - it's rather embarrassing (and expense) to buy one and find it won't work. Please e-mail all replies to me (FORBES on rs1 at VUW NZ) and I'll summarise for any other JK owners who are similarly stuck - and please don't tell me to sell it and get another PC, I'm very fond of the little Jr (and can't afford another computer). Thanks in advance.