¢¢¢¢¢¢ HISPDROM.XMO¢¢ This file is an overlay for the 800XL OS that will¢ enable ICD modified 1050's to run at high speed without¢ SpartaDOS. You need to load the XL OS from address $C000 to¢ $DFFF into memory at $4000. Overlay this with HISPDROM to¢ create the modified file. The area in the OS from $E000 to¢ $FFF is not altered and can be used as is. Burn an EPROM with¢ the new OS and plug it in - you now have high speed I/O any¢ time you go to a modified drive.¢¢ ***** I used locations $24A-$24D as flags. If this causes a¢ problem on any of your favorite programs, it can be moved.¢¢ I used a ProBurner ( Thompson Electronics -- GREAT!! )¢ to produce my EPROM:¢ a. Move 800XL OS $C000-$DFFF into $4000-$5FFF.¢ b. Go to DOS.¢ c. Load HISPDROM from D: - this will overlay parts of¢ $4000-$5FFF.¢ d. Burn EPROM from $4000 at $0000 to $1FFF in chip.¢ e. Move 800XL OS $E000-$FFFF into $4000-$5FFF.¢ f. Burn EPROM from $4000 at $2000 to $3FFF in chip.¢¢ Other types of programmers should require similar steps.¢¢¢ BOB WOOLLEY [DAD] [75126.3446]¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
