Hercules-EBX CPU User Manual V1.02
Page 28
R-Ground
Ground return for RED signal
GREEN
GREEN signal (positive, 0.7Vpp into 75 Ohm load)
G-Ground
Ground return for GREEN signal
BLUE
BLUE signal (positive, 0.7Vpp into 75 Ohm load)
B-Ground
Ground return for BLUE signal
DDC-CLOCK/DATA Digital
serial I/O signals used for monitor detection (DDC1 specification)
J25 provides a connection for VGA monitors. Note that while the DDC serial detection pins are
present, there is no 5V supply provided (nor are the old “Monitor ID” pins used). Diamond Cable
Assembly #
698024
provides a female DB15 connection to interface with a standard RGB monitor.
Connector Part Numbers
J25 Connector on CPU board:
Standard 2x5, 0.1” Box header
J25 Mating Cable Connector:
Standard 2x5, 0.1” female ribbon cable connector
4.20 Video / TV Out Connector – J26
1
S Video - Y
2
S Video - C
3
Composite
4
Ground
5
No-Connect
Table 21: J26 – Video Out Header Pinout
Signal Name
Definition
S-Video “Y”
S-Video “Brightness” (Luminance)
S-Video “C”
S-Video “Color” (Chrominance)
Composite
Composite Video
Ground
Ground (for either S-Video or Composite)
No-Connect
Do not connect this signal; For testing use only
J26 provides a video output for connection to a standard (NTSC) TV. Either S-Video (6-pin mini-
DIN) or Composite (RCA Jack) can be used; not both.
Notes:
•
Requires Software support to function (Not directly supported in BIOS)
•
LCD, S-Video, and Composite are mutually-exclusive: it is not possible to have more than
one of these options active at one time.
Connector Part Numbers
J26 Connector on CPU board:
Digi-Key Corp. 640456-5
J26 Mating Cable Connector:
Molex
22-01-3057