Epson Equity II Product Support Bulletin(s) - Page 51

Mathblas.com Installation - large

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MATHBLAS.COM INSTALLATION 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: HARDISK.BAS - 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 FLOPPY.BAS - 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. Please copy the appropriate program to the disk that contains your Math Blaster program. Run these programs and they will run the Math Blaster program for you. Page 5 of 9

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MATHBLAS.COM INSTALLATION
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:
HARDISK.BAS - 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
FLOPPY.BAS - 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.
Please copy the appropriate program to the disk that contains your
Math Blaster program.
Run these programs and they will run the
Math Blaster program for you.
Page 5 of 9