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- REVIEW: H O M E D E S I G N E R 1 2 8
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- CAD for the Commodore 128
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- Reviewed by Noel Plank
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- Available from: Software Support International
- 2700 NE Andresen Road Suite A-10
- Vancouver, WA 98661
- (800) 356-1179
-
- CAT# CO1285 $24.97 plus $5.50 s/h. (Also includes Circuit Symbols data
- disk at no charge - a $10 value)
-
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- Want to make a room addition or how about a backyard deck of your own
- design? First, you will need a plan and then layout drawings before
- construction work can begin. This is what the HOME DESIGNER 128 CAD
- program can do and more. By creating detailed drawings and accurate
- sketches you can submit your own ideas directly to a building contractor.
-
- Computer Aided Design programs are based on two types of formats,
- either bit mapped graphics or what is commonly referred to as being object-
- oriented. Bit mapped graphics store all data entered into the program in
- the bit mapped screen display. When a section of a drawing is then
- magnified in order for close up additions or refinements a display will
- consist of dots representing this bit map location. This means the detail
- accuracy is only as good as the resolution of the computer's monitor that
- you are using.
-
- HOME DESIGNER 128 uses what is called an object based CAD in which
- data is stored in the form of individual lines, circles, boxes and text
- strings. This means drawings are stored using a set of equations, so that
- zooming in or magnifying creates a sharply defined close up detail by
- increasing the actual resolution of an area. This type of program actually
- constructs a drawing by using stored information similar to a database.
- When you zoom in a close up view for example, the program runs through its
- built-in database switching to the Commodore 128's fast 2MHZ micro
- processor speed.
-
- This is where a C-128 owner can run into some real problems causing a
- computer to lock-up right in the middle of complex drawing plans if it's
- not fully working properly. According to Timeworks Inc., Commodore
- Electronics used two different internal timing mechanisms in manufacturing
- the C-128 computer. If the serial plate of your particular computer has a
- MFG DATE of either 9/85 or 10/85, you might have one of these machines.
- Even running Timework's diagnostic disk that comes packaged with the
- PARTNER 128 cartridge may not necessary determine if your computer will
- function properly when used with the Home Designer 128 program. That's
- because of translation problems associated with the precise timing speed
- changes required in the drawing and filing modes. Commodore 128D owners
- and C128 computers manufactured after September and early October 1985
- should not experience any of these problems, however.
-
- HOME DESIGNER 128 drawings can be printed to most any scale size with
- up to five superimposed drawing layers. Each of these layers can be
- considered an individual drawing that can be overlayed on any or all of the
- other layers much as transparencies can. If, for example, you're planning
- a new deck for the backyard, the basic outline of the yard and the layout
- of the back of the house might be shown. The second layer could be the
- concrete slabs leading up to the patio deck area. The third layer might
- show the actual design of the deck with its steps and bench seating areas.
- The fourth area could be for an overhead arbor and sun screen. The final
- and fifth layer might be a detailed blow up drawing showing special detail
- areas of interest in building construction. Being able to prepare multiple
- sheet drawings using the basic outline of the yard while excluding unneeded
- layers is really helpful to completing each section of a project. For
- instance, a concrete contractor does not need to see the deck or the over
- head arbor plans to submit an estimate bid. Likewise the carpenter does
- not need to see the concrete layout and so on and so forth.
-
- Maybe you're not into home improvement or construction planning but
- instead like drawing schematic diagrams for electronic projects. That's
- where the "Circuit Symbol" data disk comes in. This diskette includes 115
- different electronic symbols for use with the HOME DESIGNER 128 that can be
- inserted into your drawings. If you cannot find a symbol that meets your
- needs you can also modify one of the existing figures or design and save
- your own from scratch. You can also modify these circuit figures physical
- size and angle to be inserted at any positioning location on your schematic
- drawing.
-
- No need to go out and purchase that expensive Hewlett Packard 7470A
- Plotter even though a printer driver is provided, but you would also have
- to locate a serial to parallel interface such as the Omnitronix Deluxe
- RS232 interface to use this piece of equipment with Home Designer 128.
- Instead use your 8 or 9 pin dot matrix printer to produce drawings accurate
- enough for developing professional quality house plans to scale. The
- drawing size represented by the screen display is 22" wide by 16" high. If
- the hardcopy device is a standard carriage dot matrix printer, the output
- can be scaled to half size or 11" by 8". The resolution compatible
- printers vary from 72 X 60 DPI for Commodore compatible and 216 X 240 DPI
- for Epson or IBM compatible printers.
-
- Another useful feature of this program is the ability to used scaled
- text. This is handy for producing large headings at the top of drawings to
- small numerical figures indicating distant inches in a confined area for
- example.
-
- The HOME DESIGNER 128 runs only on the C-128 in the 40 column display
- mode. It requires a 1571 disk drive and a joystick or preferably a mouse.
- The use of a 1351 mouse is highly recommended for its ease of control. The
- program does not support the 1750 RAM Expansion however but a 1581 disk
- drive can be used as a data drive for fast loading and saving of your
- drawings. Home Designer 128 supports the use of the Cardco CARD +G, the
- GWHIZ, the XETEC SUPER GRAPHICS, and the MW-350 printer interfaces. Dot-
- Matrix Printers that can be used include Commodore MPS-801 and VIC-1525,
- STAR-NX-10C, STAR GEMINI 10X and 15X, STAR SG-10 or 15, CITOH 8510, CITOH
- PROWRITER, EPSON RX-80, EPSON FX-80, Seikosha SP1000VC, Okidata 120, LEGEND
- 1080 and the PANASONIC 1091i. Plotters such as the multi-pen Commodore
- 1520 or the Hewlett Packard 7470A but you must use the Omnitronix Serial
- to Parallel interface.
-
- As mentioned previously, Home Designer 128 is an object-based CAD
- program responding to a verb describing the operation to be performed. In
- conjunction with this descriptive command many also require one or more
- additional modifiers to further specify the desired operation. In all you
- have over 50 of these powerful commands at your disposal. To draw a half
- circle, for example, one needs to spell out the "INSERT ARC" command,
- keeping in mind that three points on the screen must be defined by
- positioning and pushing the button on the joystick or the mouse at the
- desired location on your monitor's screen. In a similar type function to
- draw a horizontal line to a certain determined scaled length you would
- enter: INS LIN HOR LEN 5.3' which is the abbreviated way of specifying
- "INSert a LINe HORizontal LENgth of 5.3 feet long." You then determine the
- location and direction using the joystick or mouse and a line will be drawn
- horizontally to the correct scale of 5.3 feet in length. If this sounds
- complicated, it is at first, and does take some time getting used to, but
- once you become accustomed to the operation commands, it becomes quick and
- easy. To help with the abbreviated commands, a list is constantly
- displayed on the right side of the screen.
-
- A more professional approach would have been a spiral bound manual
- that could be folded back for easy viewing, instead of the cheap 99-paged
- paper bound booklet that comes with the Home Designer 128 program. This
- manual does provide a two paged index at the end to enable you to easily
- find out how to use a particular command within the program. More detailed
- drawings and examples would have also helped in explaining the Home
- Designer 128's many features.
-
- Even with the problems mentioned, I consider HOME DESIGNER 128 one of
- the best programs ever created for the Commodore 128.
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