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GKMYR.ARK
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2006-10-19
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A FEW NOTES ABOUT MYARC'S EXTENDED BASIC AND THE GRAM KRACKER
Quite a few people have asked us about the Myarc Extended Basic and its
use in the Gram Kracker.
Part of the Myarc XB system is an 8K RAM Module and a new PROM for your
128K/512K Ram Disk Cards. The module only contains 8K of static RAM, it
does not contain any programming. The new PROM that is installed in your
Ram Disk has a power up routine that loads some information into this 8K
Ram module every time you go back to the title screen.
If you want to use this XB with the Gram Kracker simply leave the Write
Protect switch in the Bank 1 or Bank 2 position and then press RESET. This
will allow the Myarc PROM to down load its information into that RAM Bank
in the Gram Kracker, and appear on your menu. You MUST leave the Write
Protect switch in the Bank 1 or 2 position in order for Myarc's XB to
execute properly.
One thing to remember is, whatever was in the selected Ram Bank will be
wiped out by the 128K/512K power up routine. So if you had TI Extended
Basic loaded into the Gram Kracker and you left the Write Protect switch
turned off, then both XBs would appear on the menu BUT only the Myarc XB
will work. TI Extended Basic contains 2 banks of ROM and one of them will
be wiped out so it will not execute properly.
There are a number of TI modules that do not contain any ROM they only
contain GROM. As such these modules can properly reside in the Gram Kracker
along with Myarc's XB. To find out if a module contains ROM simply plug it
into the Gram Kracker's Module port and select 5 EDIT MEMORY. Next press
FCTN = for HEX and set the address to C6000. If the memory window is full
of 00 or FF, depending on your console, then that module only contains
GROM. A few of the popular GROM only modules are, Editor/Assembler, TI-
Writer, Disk Manager I & II, Multiplan and PRK. A few of the ROM/GROM or
ROM only modules are TI Extended Basic, Mini Memor, Atari and most other
third party modules.
--- MG ---
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