From: Vivian Zale - PowerVivian, President
To: %FULLNAME%, Cust#%CUSTNO%
PowerBASIC 2013, Gazette #115
Subject: Happy PowerNewYear
Thank you for your interest and continued use of PowerBASIC products. As you might have heard, PowerBASIC founder, my husband, has passed away in the late months of 2012.
Since then, I have received warm condolences from all of our clients and users for our loss. I would like to take a moment in this gazette to thank all who support,
and have helped in this difficult time. I would also like to give special thanks to all of our staff, whether here or remote. Your dedication has certainly eased the necessary
transition in this difficult time.
Many have asked the future of PowerBASIC. Bob Zale had created a plan for the direction of PowerBASIC which we will not waiver from. There are new products on the
horizon. While some may be delayed a bit due to circumstances, be assured that your next compiler will be at the same standards of previous releases of PowerBASIC.
Regardless of our internal adjustments, we still value, and welcome any new suggestions for our next compiler.
With regards to our product line, Console Tools (both Standard and Professional) will be discontinued in the next months at the request of
the creator, Eric Pearson - of PerfectSync Software. The reason for discontinuation is the changes Microsoft has made in regards to the Console Window.
Windows Vista, 7, and 8 have demonstrated minor anomalies in the performance of the compiler add-on, and with the current additions to our Console Compiler, continued updating has
been deemed unproductive. The product itself (Console Tools) have been a great weapon in the arsenal of PowerBASIC, and if you are developing for an XP (or earlier) environment,
it is still a powerful tool. Until a firm date is made, the Console Tools will continue to be available for purchase on our website, as
there are many good features that may still be viable to your code.
With company business out of the way, I thought it nice to resend Bob Zale's last gazette. It will be available on the website as well. We welcome you to submit topics on future
gazettes. What would you like to learn? What would you like to showcase? If you have suggestions (or even a whole article), I encourage you to send it to us for review!
Again thank you for all of your support over the years, without you Bob's vision of PowerBASIC would not have been realized. I look forward to many more PowerYears!
Vivian Zale, President
From: Bob Zale, President
To: %FULLNAME%, Cust#%CUSTNO%
PowerBASIC Gazette #114
Subject: Programming with BIT FIELD variables
Welcome to the latest edition of the PowerBASIC Gazette!
We'd like to go back and review BIT FIELD variables. Certainly an
underused but important feature of the latest PowerBASIC Compilers.
Of course, if you still haven't upgraded to PowerBASIC 10 for Windows or
PowerBASIC Console Compiler 6, now's the time to do it! Choose delivery
by download, and you could be "up and running" 30 minutes from now!
But more about that later...
Bit Field Variables
PowerBASIC offers a wide range of variable types. Signed. Unsigned.
8-bit, 16-bit, even 32-bit and 64-bit. But, sometimes, that just isn't
enough. For example, there are many times when you only need to store
a value for true/false or on/off... it takes just one bit to represent
the value 0 or 1. Why waste a whole variable for that? If you need to
represent the day of the week, you might use the values 1 to 7. Those
particular values can be represented in just 3 bits. Why waste a regular
variable for that, too?
Well, it's now no longer necessary. Bit Field variables to the rescue!
Use them to design your own custom variables, anywhere from 1-bit wide
to a full 31-bits. You can pack these variables in a User-Defined Type
or Union, one after another, to gain the very best in memory efficiency.
You can use them for compatibility, too. They're common in C and C++.
The Windows API uses them extensively. Even if you don't need them now,
it's good to understand them... and good to know they'll be right at
your fingertips the day you find you really need this power.
Bit Field variables come in two flavors, signed and unsigned. Just as
with regular integer-class variables, the signed variety can be used to
store both positive and negative values, while unsigned are restricted
to just positive values. Internally, the signed versions use one bit
for the sign, and the remaining bits for the numeric value, while the
unsigned use all the bits for the value.
Signed Bit Field variables are called SBIT variables, while the unsigned
variety are simply called BIT variables. They are only valid as a
member of a User-Defined TYPE or UNION, because they are tightly packed,
one after another, in order to optimize for the very minimum amount of
memory usage. This can be critically important when you create a large
array of these data types.
As I said earlier, BIT variables are custom variables -- you decide the
size, and you decide the format. For example, "BIT * 1" defines a 1-bit
unsigned variable which may take the value 0 or 1. The following table
shows the range of values which may be stored in Bit Field variables of
each possible size. The first two columns list the range for unsigned
BIT variables, while the next two columns denote the range for the same
size signed SBIT variables:
| 1 bit -->>||0 to 1||-1 to 0|
| 2 bits -->>||0 to 3||-2 to +1|
| 3 bits -->>||0 to 7||-4 to +3|
| 4 bits -->>||0 to 15||-8 to +7|
| 5 bits -->>||0 to 31||-16 to +15|
| 6 bits -->>||0 to 63||-32 to +31|
| 7 bits -->>||0 to 127||-64 to +63|
| 8 bits -->>||0 to 255||-128 to +127|
| 9 bits -->>||0 to 511||-256 to +255|
|10 bits -->>||0 to 1023||-512 to +511|
|11 bits -->>||0 to 2047||-1024 to +1023|
|12 bits -->>||0 to 4095||-2048 to +2047|
|13 bits -->>||0 to 8191||-4096 to +4095|
|14 bits -->>||0 to 16383||-8192 to +8191|
|15 bits -->>||0 to 32767||-16384 to +16383|
|16 bits -->>||0 to 65535||-32768 to +32767|
|17 bits -->>||0 to 131071||-65536 to +65535|
|18 bits -->>||0 to 262143||-131072 to +131071|
|19 bits -->>||0 to 524287||-262144 to +262143|
|20 bits -->>||0 to 1048575||-524288 to +524287|
|21 bits -->>||0 to 2097151||-1048576 to +1048575|
|22 bits -->>||0 to 4194304||-2097152 to +2097151|
|23 bits -->>||0 to 8388608||-4194304 to +4194303|
|24 bits -->>||0 to 16777215||-8388608 to +8388607|
|25 bits -->>||0 to 33554431||-16777216 to +16777215|
|26 bits -->>||0 to 67108863||-33554432 to +33554431|
|27 bits -->>||0 to 134217727||-67108864 to +67108863|
|28 bits -->>||0 to 268435455||-134217728 to +134217727|
|29 bits -->>||0 to 536870911||-268435456 to +268435455|
|30 bits -->>||0 to 1073741823||-536870912 to +536870911|
|31 bits -->>||0 to 2147483647||-1073741824 to +1073741823|
Of course, you should use care. Just like so-called "regular" variables,
if you try to assign a value to a Bit Field variable which is outside the
legal range, you get undefined results.
So, how are BIT variables defined? As mentioned earlier, they must be
a part of a User-Defined TYPE. As the programmer, you get to define the
size of the entire field, as well as the BIT variables which make up that
field. Each field may be 1, 2, or 4 bytes in size, and there may be any
number of these fields in a TYPE. You'll use the word BYTE, WORD, or
DWORD to specify the field size:
Nybble1 as BIT * 4 in BYTE
Nybble2 as BIT * 4
In the above example, the phrase "in BYTE" specifies that the field is
one byte in total size, and accessible through either of the two 4-bit
nybbles. Each of the 4-bit nybbles can store a value in the range of
0 to 15. An alternative could be to use signed variables in a similar
Nybble1 as SBIT * 4 in BYTE
Nybble2 as SBIT * 4
The only difference here is that each of the 4-bit nybbles can store a
signed value, in the range of -8 to plus 7. It's really just that easy!
What if you need a larger field? No problem...
Nybble1 as BIT * 4 in DWORD
Nybble2 as BIT * 4
Nybble3 as BIT * 4
Nybble4 as BIT * 4
Nybble5 as BIT * 4
Nybble6 as BIT * 4
Nybble7 as BIT * 4
Nybble8 as BIT * 4
Now, the phrase "in DWORD" tells us that the field is a total of four
bytes in total size, and it's accessed through any one of the eight
Remember, a User-Defined TYPE may contain one bit field, or many bit
fields. You're the programmer, so you're in control! Let's say you
need to separate a LONG INTEGER variable into its component parts, and
you also need to maintain a number of true/false values as well. Here's
a simple way to do just that:
Valu as BIT * 31 in DWORD
Sign as SBIT * 1
Flag as BIT * 1 in BYTE
Text as BIT * 1
Slot as BIT * 1
Coin as BIT * 1
Dart as BIT * 1
In the above example, the entire TYPE is 5 bytes in size, consisting
of seven member variables. You may have noticed that only 5 bits were
used in the second bit field. It's perfectly acceptable to leave some
bits unused if they're not needed. But be sure you never try to exceed
the size... You simply can't fit 9 bits in 1 byte!
How do you access BIT and SBIT variables? Just like any other member
of a User-Defined TYPE:
DIM Structure as abcd
Structure.Coin = 1
Structure.Slot = 0
IF ISTRUE Structure.Coin THEN
MSGBOX "We have a valid coin."
I hope it's now clear that bit field variables can greatly compress
your data size. They can make more code self-documenting. They'll
give you compatibility with certain "C" code, and assist with the
Windows API. Regardless of the application, it's a powerful tool for
the programmer... and found only in your favorite brand of BASIC!
You can find a complete copy of the PowerBASIC Documentation on the
PowerBASIC Web Site at:
Be sure to visit us soon on the web! Lots of options to help you find
the exact programming information you need! The PowerBASIC Forums now
sport over 400,000 contributions from good programmers just like you.
They ask questions, they get answers, so can you. Just click...
We'd love to hear your questions... your answers... maybe even see a
little of your latest code. So would others, and they'll respond!
Lots more to follow on the web site... and the next Gazette!
THE POWER Changes Everything
Just in case you're one of the few... who hasn't yet upgraded to the
latest compilers -- Stay with me for a minute?
Now is the time to move. Full product purchases are just $199 and $169.
Pretty refreshing compared to some of the $2,000-$5,000 prices from the
competition! If you qualify for an upgrade, you can still take advantage
of special pricing. Upgrade PB/WIN 9 to PowerBASIC 10.0 for just $99 --
upgrade PB/CC 5 to PB/CC 6.0 for just $89! There is no reason to wait...
today is the day to upgrade.
Of course, PB/CC is our Console Compiler -- creates programs with a
text mode user interface. Easy to use. Easy to port from DOS. It's
the perfect solution for CGI Internet applications. Any time you want
pure performance and nothing more! PowerBASIC 10 for Windows gives you
the "look and feel" of a graphical user interface (GUI), the essence
of Windows. Frankly, they've both taken a big leap forward.
You know, a good compiler offers you ANSI strings. This has been the
standard for many years. A better compiler lets you choose between
ANSI and UNICODE in each program. But only one of them per program.
If you want Unicode, you can't keep binary bytes in a string. It
simply won't work. If you want ANSI, you can't have Unicode without
exhaustive conversions. Not so good.
A great compiler, like PowerBASIC, supports all of them in the same
program. And it's totally transparent. With PowerBASIC 10.0 for
Windows (or PowerBASIC Console Compiler 6.0), you can have it all.
One variable with ANSI. Another with UNICODE. Mix and match any
way you choose with PowerStrings. All the messy details, and even
the needed translations, are handled automatically by the compiler.
You can finally display a Euro symbol. Unicode text in a GUI or a
Console. Read and write a Unicode file. Even print Unicode text on
a Windows printer!
Static Link Libraries
Compile all your general purpose code into static units. Then, when
it's needed, just $LINK it into your EXE or DLL and you're on your way.
It's pre-compiled, so it's perfect for team programming. What will it
do for third-party tools? Plenty. PerfectSync has already released
SQL Tools 3. It links right into your EXE, so there's no need to drag
a DLL around. Just $LINK and go. Lots more tools are sure to follow.
And, if that's not enough, you'll get a librarian, too. Combine any
number of units to a single library, and just use one single $LINK.
PowerBASIC just discards those which aren't necessary. SLL's can
contain Subs, Functions, and Object Classes. How easy can it get?
Automatic Dead Code Removal
Fight the war on BloatWare. Now, you can include big libraries of
useful code -- PowerBASIC cleans it up for you. Any Sub/Function not
used is automatically ignored when compiled. In fact, even Classes
are pared down by similar Method and Property removal.
Order Now? GOTO https://shop.powerbasic.com/
There's more. Lots, lots more. A completely new IDE based on Tabs,
with syntax display as you type! Transparent Unicode. Print Preview.
Thread Objects. A built in Resource Compiler. A StringBuilder Class.
PowerArray class encapsulates SafeArray structures. A DEC$ function
formats decimal numbers. Graphic Windows with scroll bars and scroll
keys, user drag to resize, clip areas, and wrap by whole word. ENUM
blocks, PREFIX blocks, ASMDATA blocks. THREADSAFE option for functions
and methods. TEXT windows, Text Split, and the new FASTPROC procedures.
There's more, but it's easy to see this is a very important upgrade.
SQL Tools version 3
You can use the power of SQL to access relational databases from
Microsoft Access, SQL Server, Oracle, FoxPro, dBase, Btrieve, and 50
other popular formats. Open a database with a single line of code,
and use standard SQL statements to build powerful, sophisticated,
multi-user database programs! This is a total database solution.
This product has earned accolades from virtually all of its users.
Version 3 is certainly no exception. With both a DLL and an SLL,
you'll have the option to just $LINK units and libraries right into
your EXE. No more DLL's to drag around, unless you choose it.
Even better, PowerBASIC will only link the code that's necessary.
Version 3 is faster and leaner, even with all the new features.
Many functions have been simplified. You can retrieve all rows in
a single operation. You'll also get improved trace files, Quad
integers, Unicode, plus enhanced Memo and BLOB field support.
Then there's improved Microsoft Access database support, and much
more! Documentation is provided in CHM, HLP, and PDF formats.
You can order right now...
PB/WIN 10.0 is priced at $199, while PB Console Compiler is $169.
Upgrades from versions 9 and 5 are just $99 and $89 respectively.
SQL Tools Pro is $199.95, while SQL Tools Std is $99.95. Upgrades
from version 2 are $99.95 and $69.95 respectively.
Need more info?
We have a page created just for you. It's "Why should I upgrade?"
Need even more info?
The complete documentation for both PB/CC 6 and PB/WIN 10 can be
found right on the PowerBASIC Web Site! To see the 100% complete
GOTO www.powerbasic.com -- Then [click] HELP DESK
You'll find everything you need to know to make an informed decision.
You can order right now by replying to this email. You can call us
today at (888)659-8000 or (941)473-7300, or fax us at (941)681-3100.
You can visit https://shop.powerbasic.com/ to place an e/order on
our secure web site, or even mail an order to our offices. But no
matter what method you choose, do it today and do it with confidence.
Every product PowerBASIC ships for physical delivery is offered with a
money-back guarantee for a full 30 days from the transaction date.
Bob Zale, President
PowerBASIC Price List
| PB/CC Console Compiler 6.0 - Full Product|| $169.00|
| PB/CC Console Compiler 6.0 - Upgrade from ver 5|| $89.00|
| PB/CC Console Compiler 6.0 - Upgrade from prior versions|| $119.00|
|    Add Printed Documentation|| $49.00|
| PowerBASIC for Windows 10.0 (GUI) - Full Product|| $199.00|
| PowerBASIC for Windows 10.0 - Upgrade from ver 9|| $99.00|
| PowerBASIC for Windows 10.0 - Upgrade from prior versions   || $129.00|
|    Add Printed Documentation - Back ordered|| $49.00|
| Classic Console Compiler 5.0 - Full Product|| $89.00|
| Classic Console Compiler 5.0 - Upgrade from ver 4|| $49.00|
| Classic PB for Windows 9.0 (GUI) - Full Product|| $99.00|
| Classic PB for Windows 9.0 - Upgrade from ver 8|| $49.00|
| PowerBASIC for DOS 3.5 - Full Product|| $99.00|
| PowerBASIC for DOS 3.5 - Upgrade from prior versions|| $49.00|
|    Add Printed Documentation (2 book set)|| $29.00|
| PowerTree BTree Manager for DOS and Windows|| $99.00|
| PowerBASIC Forms Visual Designer ver 2.0|| $99.00|
| SQL Tools Standard Version 3.0:|| $ 99.95|
|    Upgrade from ver 2 (Std)|| $69.95|
| SQL Tools Professional Version 3.0:|| $199.95|
|    Upgrade from ver 2 (Pro)|| $99.95|
|    Upgrade from ver 2 (Std)|| $129.95|
| Graphics Tools Standard ver 2 for PB/CC & PB/WIN|| $69.95|
| Graphics Tools Professional ver 2 for PB/CC & PB/WIN|| $139.95|
| Graphics Tools Standard ver 2 Upgrade from ver 1|| $44.95|
| Graphics Tools Professional ver 2 Upgrade from ver 1|| $114.95|
| Graphics Tools Professional ver 2 Upgrade from ver 2 Std|| $79.95|
| Console Tools Standard:|| $49.95|
| Console Tools Professional:|| $99.95|
|Any Software||Software |
& 1 book
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Order online at shop.powerbasic.com/ or just send an email with all pertinent information to:
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Most PowerBASIC products (those without printed books) can now be delivered by electronic mail. No wait for a package to arrive... No high shipping costs... For just $6 per order, no matter how many products, we'll deliver directly to your computer. If you're outside the U.S., savings might be greater. You won't pay taxes or duties to a freight company or postal service, because they aren't involved in the delivery. Check your tax code to be sure, but some countries charge no tax at all on transactions of this type. It could just be your lucky day!
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PowerBASIC Gazette - Electronic Edition|
Volume 1 - Issue 115
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