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- Math Blaster is an educational game produced by Davidson and
- associates in Torrance Calif. It works well with the entire
- Equity series except the Equity 1 running color mode. The large
- numbers that Math Blaster places on the screen are done in
- graphics mode. These numbers appear as square blocks of garble
- on the Equity 1 color screen.
-
- Unlike the GWBASIC used on the Equity II and III, GWBASIC for the
- Equity 1 does not initialize certain memory areas. In
- particular, area 510 of segment 0 is not initialized(this area is
- used by BASIC to hold the default data segment value).
-
- Tests have been run on ROM BIOS versions 2.1i, 2.20 and 2.21.
- The following programs have proved to be an effective fix for
- cases tested so far:
-
- For hard disk versions:
-
- 10 PRINT " This patch will not work with config.sys files"
- 20 DEF SEG =0
- 30 POKE &H510,&HC9
- 40 POKE &H511,&H14
- 50 RUN "color
-
-
- For Floppy disk versions.
-
- 10 DEF SEG =0
- 20 PRINT "this is a fix for the floppy disk system"
- 30 PRINT "make sure no CONFIG.sys file is active"
- 40 PRINT "try this version on floppy systems"
- 50 POKE &H510,&HC3
- 60 POKE &H511,&H14
- 70 RUN "color
-
- CONFIG.SYS and AUTOEXEC.BAT move things around in memory. These
- patch programs will not work if either of these two programs are
- activated on boot up.
-