ZGrass Information
------------------

This looks like the finished Viper 1200 Zgrass unit as seen in the Arcadian:

ARCADIAN, 5, no. 12 (October 24, 1983): 172-173

Page 173:

ZGRASS machine photograph on the other side of this page.  This is the 
configuration going into production.  Note the separate keyboard with coiled 
cord, and the very thin (1 1/2") containers for the motherboard (bottom box) 
and the disc drive unit.  Note also that the disc drive(s) shown are optional 
extra equipment- the controllers are included but not the drives.  The separate 
power supply is big enough to handle four disc drives, the Zgrass unit, plus 
256K additional (optional for high resolution (320x204) graphics) memory.  
Included in the software are: full screen test editor; string manipulation; 
multi-dimensional arrays and strings; 6 user-definable keys; and new graphics 
commands: ELLIPSE, ROTATE, STRIPE, SHRINK, PATTERN and more.  This system will 
accommodate dot matrix or letter quality printers, graphic digitizers ("bit 
pad"), voice synthesizers, modems, remote keyboard, remote appliance 
controllers, and computer terminals.  One of our subscribers has collected a 
large amount of printed date on ZGRASS, and is selling copies of the over 300 
page document at $27.50 postpaid (no COD)- Michael Walter, 23181 Broadway Ave., 
Oakwood Village, OH 44146  (216)439-3827


Page 174 (Information accompanying with ZGrass picture on this page):

- 8231 High Speed Arithmetic Processor Unit
- Dual 2000-Baud Cassette Interface with Motor Control
- FRI/EMI Filter with Plug-In Cord and Built-In Fuse
- Full Regulated DC Power Supplies 5,12,-12
- 64K 200ns Dynamic RAM Memory for Programming
- 32K Custom Z-GRASS Real-Time Operating System
- Dual RS232 Bi-Directional, Communications Ports
- 4 Channel Double-Density 5.25 Floppy Disk Controller
- 8048 Microprocessor Controlled Keyboard with 1K ROM Decoder
- OAK F.T.M. 81-Key Computer Designed Keyboard and Keypad
- Piezo Electric Key Click for Audible Keyboard Feedback