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"FIXBIOS" - What It Does |
The information in this document applies to:
WordPerfect® 5.1 for DOS
Problem
Solutions: When WP is executed it queries the BIOS (through interrupt 1A) to see if WordPerfect's Shell is running. Normally, this query would be considered invalid would be discarded because it is outside of the normal range that interrupt 1A will recognize. If Shell is running, however, the query is recognized allowing WP to use certain program features which are dependent on the presence of Shell (i.e., Go to Shell). If Shell is not running, the BIOS should treat the query as invalid and ignore it. Occasionally when the machine BIOS is not 100% IBM compatible, this otherwise harmless query confuses the BIOS which has insufficient error handling capabilities and in turn affects the machine's operation. FIXBIOS.COM allows interrupt 1A to properly deal with the invalid query and properly ignore it. When using WordPerfect 5.1 on the Zenith 158 computer, running FIXBIOS.COM will correct the problem of receiving the error "Divide Overflow." It also helps correct problems with a clock in Zenith computers which also utilize this same interrupt. Running FIXBIOS.COM on this type of computer can also correct the problem of the cursor just moving to the next line when WP is typed (does not go into the program). This particular problem occurred on a Multi Tech computer. |
Answer:
Details:
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