Vector 4 - Page 20

VECTOR 4
TECHNICAL INFORMATION
/0 (Cont.)
Other Ports- Other ports are used for the programmable timer, video controller, tone
generator and to set various subsystem parameters.
ROM Enable (and color) 02H
03H
CPU Swap or
Software RESET 0CH
0DH
Video Controller | OEH
O0FH
Timer 10H (Timer 0)
11H (Timer 1)
12H (Timer 2)
13H (Control)
RAM Address Map 16H
17TH
Tone Generator 18H
19H
Color Map 1CH
1DH
1EH
1FH
Expansion Slots- Two V-100 (modified S-100) expansion slots are available for additional
boards. Since the main system uses a Switching Regulated Power Supply these boards
must not have on-board regulation.
Interrupts- programmable timer (8253) is used to generate one interrupt and two baud
rates. The interrupt frequency can be changed by reprogramming the timing ports 10H,
11H and 12H in conjunction with the control port 13H.
KEYBOARD -
The Vector 4 uses a detachable keyboard which has 91 keys that are accessed through a
serial interface. The keyset is ASCI coded and includes numerous advanced features
such as fifteen special funetion keys.
3
09-01-82 7200-0001 | I1