APPENDIX NINETEEN



1235 DATA 66,3,169,0,157,68,3,169,4,157
1240 DATA 69,3,169,4,157,72,3,169,0,157
1245 DATA 73,3,32,86,228,173,0,4,96,226
1250 DATA 2,227,2,0,52,-1


ROM OS to RAM OS Toggle
The second program is a short version ot the "RamMaster" also on
the Gateway BBS; it turns your ROM OS into a RAM OS and traps RE-
SET so that if you press it. it doesn't jump back to ROM When you
press RESET. the routine leaves the block at 52224-53247 ($CC00-
$CFFF) intact, so any altered character set you've loaded there will
remain untouched. It also creates an AUTORUN.SYS file, so if you
want it on the same disk as the BASIC switcher above, you'll have to
rename it (line 30). The RESET handler routine loads into page 6 at
byte 1616 ($650). Both programs can be loaded trom DOS with the
"L" command.

ROM to RAM OS Handler

10 GRAPHICS 0:DIM A$(10):? "ROM TO RAM O/S
   HANDLER"
15 PRINT "BY Matthew Ratcliff 3/25/85"
20 PRINT :PRINT "GET DOS DISK READY AND PRE
   SS RTN";
25 INPUT A$
30 TRAP 200:OPEN #1,8,0,"D:AUTORUN.SYS"
40 RESTORE
50 READ A:IF A<0 THEN 100
60 PUT #1,A:GOTO 50
100 CLOSE #1:PRINT "64K 'XL  ROM->RAM O/S C
    ONVERTER"
105 PRINT "AUTORUN.SYS FILE COMPLETE."
110 PRINT "BE SURE TO SAVE THIS LOADER"
115 PRINT "AS A BACKUP!":END
200 PRINT "UNEXPECTED ERROR ";
205 PRINT PEEK(195):PRINT "AT LINE ";PEEK(1
    86)+256*PEEK (187)
210 END
1000 DATA 255,255,0,52,105,53,169,80,133,2
1005 DATA 133,216,169,6,133,3,133,217,165,9
1010 DATA 9,2,133,9,160,0,169,144,133,222,1
     69
1015 DATA 52,133,223,173,60,53,133,214,177
1020 DATA 222,145,216,230,222,208,2,230,223
1025 DATA 230,216,208,2,230,217,198,214,208
     ,236,76
1030 DATA 91,52,205,225,244,170,210,225,244
     ,167
1035 DATA 243,160,210,207,205,173,190,210,1
     93,205
1040 DATA 160,200,225,238,228,236,229,242,1
     60,242