F Q—BUS 
igure III IDS ^ 
ARIES—II SYSTEM CONFIGURATION 
  
- 20 
PPBUS 
VDS 
  
Three principal components, the 
IDS, DPI and VDS are loosely 
coupled via communication through 
the DPI. A bitpad provides control 
of image display. A colour monitor 
vith definable topology can provide 
split screen stereo viewing. 
  
  
  
  
Q—BUS 
RGBS 
  
  
  
  
  
    
Dual Port Interface 
VDS Video Display System 
IDS Image Display System 
IPS Image Processing System 
PPBUS Pixel Processing Bus 
RGBS Red/Green/Blue/Synch 
RS232 Serial ASCII Data 
   
MONITOR 
  
  
  
  
  
  
  
+ RS232 
M BITPAD 
Figure IV 
ARIES—II SHARED VIDEO 
  
MEMORY ARRAY 
Both the image display 
system (IDS) and the image 
processing system (IPS) 
access the video array 
(VMA) of tables and image 
data via 8 KB windows. The 
video display hardware 
(VDS) assembles each dis- 
played video line from the 
table information. The IDS 
and IPS can exchange mes- 
sages by a "mailbox" in 
VMA. The IPS may use VMA 
for general data storage 
during computations by 
defining image "files" for 
that purpose. 
  
  
  
8 KB 
  
IDS 
  
  
  
VDS 
Line 
Buffer 
    
   
  
  
  
e 
IPS 
  
— 
  
  
162