Specifications

Chapter 2: Getting Started
2 – 12
Some examples of ZVGPORT settings:
Given: ECP Address = 378, DMA = 3, Interrupt = 7, WG Monitor:
set ZVGPORT=P378 D3 I7 M4
This indicates the ECP is connected to address 378, and uses DMA channel 3, and
IRQ 7, and is connected to a color Monitor that incorporates a spotkiller.
Given: ECP Address = 378, DMA = 3 (Default Mode), Interrupt = 7, WG Monitor
set ZVGPORT=P378 D3,2 I7 M4
Same as above, but attempts to use DMA mode 2 (Single Mode), on the assumption
the default DMA mode was not working.
Given: ECP Address = 378, DMA = 3 (disabled), Interrupt = 7, WG Monitor
set ZVGPORT=P378 D3,0 I7 M4
Same as above, but does not use DMA. This will slow down the speed at which the
ZVG can draw vectors and may cause the framerates to drop. However some PC's
might not support DMA and this option can allow them to work with a ZVG.
Given: ECP Address = 378, DMA = 3 (Default Mode), Interrupt = 7, G05 Monitor
set ZVGPORT=P378 D3 I7 M12
Same as first example but indicates a B&W monitor is being used. Here's a list of
common monitor types and their numbers:
M4 = Color Monitors (G08's, WG's, Amplifones)
M12 = B&W Monitors (G05's, 19V2000's)
M29 = The Vectrex Monitor.
Step 3: Running ZVGTWEAK
Connect the parallel port cable to the ZVG and the PC. If not already powered on,
power on the PC.
Navigate to the directory where you’ve copied ZVGTWEAK.EXE and run ZVGTWEAK
from the command line. Set up the environment variable ZVGPORT using your
BIOS settings to determine the above values, then type:
ZVGTWEAK
Note: The newest version of ZVGTWEAK (including source code) is always available on
the Zektor website:
http://www.zektor.com. Click on Downloads and then download
the newest version of the Software Development Kit.