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Jeff Parsons 2017-06-17 09:54:32 -07:00 • committed by Jeff Parsons
commit b2d6e254ac
7 changed files with 61 additions and 45 deletions
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41
apps/pcx86/1982/ratbas/README.md
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@ -18,33 +18,36 @@ RatBas (1982)
The RatBas Translator was a preprocessing utility created in 1982 by William F. Sharpe and Brent D. Weaver that
could translate a structured dialect of BASIC into code compatible with IBM BASIC. It was described extensively
in a [PC Magazine (October 1982)](#article-from-pc-magazine-october-1982) article.
in a [PC Magazine (October 1982)](#article-from-pc-magazine-october-1982) article. NOTE: The article refers to
the program as "RatBAS", but we use the distribution name "RatBas".
The only copy of RatBas we've been able to locate is version 2.13 from a
shareware CD-ROM titled "[PC-SIG Library Eighth Edition From PC-SIG (April 1990)](http://cd.textfiles.com/pcsig08/)"
on [DISK0003](http://cd.textfiles.com/pcsig08/001_100/DISK0003/).
We have archived it as [RatBas 2.13](#directory-listing-of-ratbas-213). It has been loaded into drive B: in
the machine below.
the machine below, which is running [PC-DOS 1.10](/disks/pcx86/dos/ibm/1.10/), the most recent version of PC-DOS
at the time of this RatBas release.
{% include machine.html id="ibm5150" %}
Directory Listing of RatBas 2.13
--------------------------------
Volume in drive A is RATBAS21
Directory of A:\
Volume in drive B is RATBAS 213
Directory of B:\
CRC TXT 980 11-08-84 11:29p
CRCK4 COM 1536 10-21-82 12:54p
RATBAS TXT 30080 8-13-82 5:00p
RATBAS UM 9856 8-09-82 5:00p
RT EXE 35456 11-05-82 1:48a
RT UM 3328 10-29-82 4:32a
SORT INC 896 10-29-82 4:42a
TEST BAS 5632 11-04-82 4:21p
TEST RAT 2304 11-01-82 1:30a
9 File(s) 68608 bytes free
CRC TXT 980 11-08-84 11:29p
CRCK4 COM 1536 10-21-82 12:54p
RATBAS TXT 30080 08-13-82 5:00p
RATBAS UM 9856 08-09-82 5:00p
RT EXE 35456 11-05-82 1:48a
RT UM 3328 10-29-82 4:32a
SORT INC 896 10-29-82 4:42a
TEST BAS 5632 11-04-82 4:21p
TEST RAT 2304 11-01-82 1:30a
9 file(s) 90068 bytes
68608 bytes free
Here's the output of CRCK4:
@ -292,8 +295,8 @@ To solve this problem RatBAS includes an alternative IF structure. The syntax i
.
IFEND]
The <condition> may be any expression that will evaluate to true or false; <statement> may be any legal BASIC
(or RatBAS) statement.
The &lt;condition&gt; may be any expression that will evaluate to true or false; &lt;statement&gt; may be any legal
BASIC (or RatBAS) statement.
Although not required, program readability is greatly enhanced if levels of logic are portrayed by indentation.
@ -329,9 +332,9 @@ RatBAS provides an additional structure not present in BASIC. Its syntax is:
.
CEND]
<lhs> may be anything that can be placed on the left side of the equality in an IF statement; <rhs> may be anything
that can be placed on the right side of the equality. Optionally, <rhs> may be composed of two or more such
expressions, separated by commas. If OTHERWISE) is omitted, an implicit OTHERWISE) with no statements is assumed.
&lt;lhs&gt; may be anything that can be placed on the left side of the equality in an IF statement; &lt;rhs&gt; may be
anything that can be placed on the right side of the equality. Optionally, &lt;rhs&gt; may be composed of two or more
such expressions, separated by commas. If OTHERWISE) is omitted, an implicit OTHERWISE) with no statements is assumed.
CASE name$ OF]
"Bill","BILL" :]