=========================================================================== Packet: BBYTE Date: 04-12-94 (20:13) Number: 1040 From: WAYNE DELISLE SR. Refer#: NONE To: DON CUSTER Recvd: NO Subj: PCjr to CGA display adapter Conf: (22) CLTTECH --------------------------------------------------------------------------- Subject: PCjr to CGA display adapter Don, Here is the info on building the PCjr Display cable adapter. I bought all the parts at Radio Shack including 5' of shielded cable for less then $5.00. For the 2x9 berg connector, I used a broken connector I had removed from an old floppy drive cable and cut down to size. I used a cheap plastic 9 pin D shell hood and hacked it up with an exacto knife and super-glued it together for the cover. 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � PCjr Display Cable Specifications � PCjr to CGA Monitor � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� PCjr 9횾IN SYSTEM COLOR CONNECTOR DISPLAY D CABLE CONNECTOR 旼컴컴컴컴컴컴커 (D훁HELL) A1 컴컴컴컴컴� NOT USED � A2 컴컴컴컴컴� NOT USED � A3 컴컴컴컴컴� NOT USED � A4 컴컴컴컴컴� RED 쳐컴컴컴컴� 5 A5 컴컴컴컴컴� GREEN 쳐컴컴컴컴� 3 A6 컴컴컴컴컴� BLUE 쳐컴컴컴컴� 6 A7 컴컴컴컴컴� INTENSITY 쳐컴컴컴컴� 4 A8 컴컴컴컴컴� NOT USED � A9 컴컴컴컴컴� NOT USED � B1 컴컴컴컴컴� VERTICAL 쳐컴컴컴컴� 9 B2 컴컴컴컴컴� NOT USED � B3 컴컴컴컴컴� HORIZONTAL 쳐컴컴컴컴� 8 B4 컴컴컴컴컴� NOT USED � B5 컴컴컴컴컴� GROUND 쳐컴컴컴컴� 2 B6 컴컴컴컴컴� NOT USED � B7 컴컴컴컴컴� NOT USED � B8 컴컴컴컴컴� NOT USED � B9 컴컴컴컴컴� GROUND 쳐컴컴컴컴� 1 읕컴컴컴컴컴컴켸 FRONT VIEW FRONT VIEW \컴컴컴컴컴컴컴�/ A9 旼쩡쩡쩡쩡쩡쩡쩡쩡� A1 \1 o o o o o 5/ 쳐탠탠탠탠탠탠탠탠� \6 o o o o 9/ B9 읕좔좔좔좔좔좔좔좔� B1 \컴컴컴컴�/ CGA Adapter for PCjr Display 컴컴컴컴컴컴컴컴컴컴컴컴컴컴 This Document gives some Technical Information on the IBM PCjr Color Display, Diagrams and Data for building a cable to adapt the PCjr Display to the IBM Color Graphics Adapter (CGA) Card. Designed at home on my IBM PCjr and Tested on my IBM XT286 with CGA and PCjr Display. Also work with the IBM Convertible Displays, and with EGA card in CGA mode. Reference: 1) "IBM Hardware Maintenance and Service: PCjr" 2) "Installation Instructions for the Color Graphics Adapter," 3) "Installation Instructions for the Enhanced Graphics Adapter." PCjr Display Pinout vs. CGA 컴컴컴컴컴컴컴컴컴컴컴컴컴� PCjr RGB output is: PC CGA output pin is: A01 - TV Vertical drive ................ n/a A02 Gnd A03 - TV Horizontal drive .............. n/a A04 Blue ............................. 5 Blue A05 Red ............................... 3 Red A06 Intensity ........................ 6 Intensity A07 Green ............................. 4 Green A08 - Comp Sync drive .................. n/a A09 Audio out ........................ n/a B01 + Vert drive out ................... 9 +Vertical B02 Gnd B03 + Horz drive out ................... 8 +Horizontal B04 Gnd B05 Gnd .............................. 2 Ground B06 Gnd B07 Gnd B08 Gnd B09 Gnd - Frame ....................... 1 Ground Here is the pin layout as you look into the holes on the CGA and the Display's connector: 1 o 1-B9 letter "D" stamped on top o 6 2-B5 2 o 3-A5 9 8 7 6 5 4 3 2 1 o 7 4-A7 旼컴컴컴컴컴컴컴컴컴� 3 o 5-A4 A o o o o o o o o o o 8 6-A6 B o o o o o o o o o 4 o 7-n/c o 9 8-B3 5 o 9-B1 ADAPTER CABLE Diagram: CGA TO PCjr DISPLAY 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 PCjr CD Berg 2x9 Berg 9 pin D Shell 9 pin D Connector Header Female Male Female 2x9 Female 2x9 CGA Card Hood Hood � AB BA �/ \ � 넬컴� 旼커� 6" 旼 커 납oo�1 켰� 9쿽o납 CABLE 1쿽 \ / o�1 납oo�2 켰� 8쿽o납 8 Wire Shielded � o�6 6쿽 � 납oo�3 켰� 7쿽o납 2쿽 � � o�2 컴컴눴oo�4 켰� 6쿽o냉컴컴컴컴컴컴컴컴컴컴컴캐 o�7 7쿽 � "D"납oo�5 켰� 5쿽o납"D" 3쿽 � � o�3 컴컴눴oo�6 켰� 4쿽o냉컴컴컴컴컴컴컴컴컴컴컴캐 o�8 8쿽 � 납oo�7 켰� 3쿽o납 4쿽 � � o�4 납oo�8 켰� 2쿽o납 � o�9 9쿽 � 납oo�9 켰� 1쿽o납 5쿽 / \ o�5 냅컴� 읕켸� 읕 켸 � Pins Flipped � Pins � 1:9 9:1 1:1 � ADAPTER CABLE Wiring List: CGA TO PCjr DISPLAY 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 PCjr CD Berg 2x9 Berg CABLE 9 pin D Shell 9 pin D Connector Header Female 8 Wire Male Female 2x9 Female 2x9 Shielded CGA Card 컴컴컴컴컴 컴컴컴� 컴컴컴컴� 컴컴컴컴컴 컴컴컴컴컴컴컴 컴컴컴컴� B9 ............ B1 .... Green ........ 1 ......... 1 B5 ............ B5 .... Blue ........ 2 ......... 2 A5 ............ A5 .... Purple ........ 3 ......... 3 A7 ............ A3 .... Black ........ 4 ......... 4 A4 ............ A6 .... Brown ........ 5 ......... 5 A6 ............ A4 .... Red ........ 6 ......... 6 n/c n/c n/c 7 ......... 7 B3 ............ B7 .... Orange ........ 8 ......... 8 B1 ............ B9 .... Yellow ........ 9 ......... 9 ADAPTER CABLE Parts List: CGA TO PCjr DISPLAY 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� Method 1: Modify IBM PCjr Adapter Cable # 1504643 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� QTY Supplier Description 컴� 컴컴컴컴컴컴� 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 1 IBM IBM PCjr Adapter Cable P/N 1504643 1 AMP, 3M, Berg D-Subminiature Male 9-pin Solder 1 AMP, 3M, Berg 2x9 pin .100" Center Header Molex. 旼� 컴컴늙쳐컴� 컴컴늙쳐컴� END View 읕� �� �� L = .023"min - .04"max Instructions: Replace the 9-pin D Female with the 9-pin Male. Open the 2x9 Connector and move the pin contacts to match the wiring list above. Plug the Adapter cable 2x9 connector to the PCjr Display matching the "D" to "D". Plug the Adapter Cable 9-pin D-Shell to the CGA and secure. Method 2: Build from scratch 컴컴컴컴컴컴컴컴컴컴컴컴컴컴 QTY Supplier Description 컴� 컴컴컴컴 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� 1 AMP, 3M, Berg D-Subminiature Male 9-pin Solder-Cup Connector 1 AMP, 3M, Berg D-Subminiature 9-pin Hood (Metal or Metalized) 6" Belden, etc. 8-Wire Shielded Cable 22 or 23 AWG Stranded 1 AMP, 3M, Berg 2x9 .100" Center Housing for Connector 18 AMP, 3M, Berg .100" Center Socket Contacts 1 AMP, 3M, Berg 2x9 .100" Center Hood (Metal or Metalized) 1 AMP, 3M, Berg 2x9 pin .100" Center Header Molex. 旼� 컴컴늙쳐컴� 컴컴늙쳐컴� END View 읕� �� �� L = .023"min - .04"max Instructions: Solder on the 9-pin D Male and assemble Hood. Wire the 2x9 Connector to match the wiring list above and assemble Hood. Plug the Adapter cable 2x9 connector to the PCjr Display matching the "D" to "D". Plug the Adapter Cable 9-pin D-Shell to the CGA and secure. --- GEcho 1.00 * Origin: The Matrix BBS 704-535-7361 Area 704 Hub, SkyNet (1:379/33)