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  1. Path: dispatch.news.demon.net!demon!kenwyn.demon.co.uk
  2. From: Ken@kenwyn.demon.co.uk (Ken)
  3. Newsgroups: comp.sys.amiga.hardware
  4. Subject: Re: Null modem cable question
  5. Date: Fri, 08 Mar 1996 15:57:56 GMT
  6. Message-ID: <2306.6641T923T1452@kenwyn.demon.co.uk>
  7. References: <4hfbt3$pvv@nuhou.aloha.net> <965.6639T412T1671@kenwyn.demon.co.uk> <4hkkpi$20a@nuhou.aloha.net>
  8. NNTP-Posting-Host: kenwyn.demon.co.uk
  9. X-NNTP-Posting-Host: kenwyn.demon.co.uk
  10. X-Newsreader: THOR 2.22 (Amiga;TCP/IP)
  11.  
  12.  
  13. On 06-Mar-96 23:16:18, Richard J. Dane wrote this about Re: Null modem cable
  14. question;
  15.  
  16. > What is the advantage of Parnet?
  17.  
  18. Parnet is faster than equivalent serial based programs, it allows you
  19. to access mounted drives on a remote Amiga as if they were on the machine
  20. being used. With a null-modem cable you need to run comms programs on
  21. both machines and upload/download files from one to the other.
  22.  
  23. > What is the pinout for both?
  24.  
  25. --
  26. Parnet cable:-  basically a parallel cable with pins 13 & 10 connected.
  27.  
  28. Connector 1     <->     Connector 2     Signal name
  29.         2               2               DO
  30.         3               3               D1
  31.         4               4               D2
  32.         5               5               D3
  33.         6               6               D4
  34.         7               7               D5
  35.         8               8               D6
  36.         9               9               D7
  37.         12              12              PAPER-OUT
  38.         11              11              BUSY
  39.         13+10           13+10           SEL+ACK
  40.         18              18              GND
  41.         19              19              GND
  42.         20              20              GND
  43.         21              21              GND
  44.         22              22              GND
  45.  
  46. Null-modem cable:-
  47.  
  48. Connector 1     <->     Connector 2     Pin descriptions
  49.         2               3               2      TXD     Transmit data
  50.         3               2               3      RXD     Receive data
  51.         4               5               4      RTS     Request to send
  52.         5               4               5      CTS     Clear to send
  53.         20              6+8             6      DSR     Data set ready
  54.         6+8             20              8      DCD     Carrier detect
  55.                                         20     DTR     Data terminal ready
  56.  
  57. --
  58.  
  59. > What sources could I have looked up to learn the above? :)
  60.  
  61. Most of it is available from Aminet, I got the signal names from an
  62. old A500+ manual.
  63.  
  64. > Thank you Ken, for taking the time.
  65. > Aloha Richard
  66.  
  67. No problem...
  68.  
  69.  
  70. Ken...................
  71.  
  72. --
  73.  
  74. <tsb> EMail: Ken@kenwyn.demon.co.uk
  75. * Motorola Motivated A1200T 060/50 2+16Meg, PicolloSD64, MFC3
  76. Amiga (the TRUE)  Multitasking - Multiplatform - Multimedia Machine
  77. Amiga OS3, MS-DOS 6.2 , Macintosh System 7.5.1
  78.  
  79.