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x68000:hard_disk [2008/10/06 14:39] computoliox68000:hard_disk [2023/07/04 17:49] (current) – [Internal HD connector] TD-Linux
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 ==== External HD connector ==== ==== External HD connector ====
  
-All models of X68000 (even SASI-based models) seem to have standard pinouts for the external hard disk connector:+All X68000s (even the SASI-based models) seem to have standard pinouts for the external hard disk connector:
  
-*Original model, Ace, Expert, Pro: [[http://www.gamesx.com/hwb/co_ScsiExternalCentronics50.html|Centronics 50-pin]] with /ATN and PARITY unconnected.+ * Original model, Ace, Expert, Pro: [[http://www.gamesx.com/hwb/co_ScsiExternalCentronics50.html|Centronics 50-pin]] with /ATNPARITY and Termination Power unconnected.
  
-*Super, XVI: Standard [[http://www.gamesx.com/hwb/co_ScsiExternalCentronics50.html|Centronics 50-pin]].+ * Super, XVI: Standard [[http://www.gamesx.com/hwb/co_ScsiExternalCentronics50.html|Centronics 50-pin]].
  
-*Compact XVI, X68030, X68030 Compact: [[http://www.gamesx.com/hwb/co_ScsiExternalHiDSub.html|DH-50]].+ * Compact XVI, X68030, X68030 Compact: [[http://www.gamesx.com/hwb/co_ScsiExternalHiDSub.html|High-Density Centronics 50-pin]].
  
 ==== Internal HD connector ==== ==== Internal HD connector ====
  
-All X68000 machines have a custom internal hard disk connector. The pinout for the SASI-based machines is as follows:+All X68000 machines have a custom internal hard disk connector.  
 + 
 +The pinout for the SASI-based machines is as follows:
  
 ^Pin^Description^Pin^Description^ ^Pin^Description^Pin^Description^
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 |  12 | PARITY |  25  |/REQ| |  12 | PARITY |  25  |/REQ|
 |  13 | +5V(Termination power)  |  26  |/I/O| |  13 | +5V(Termination power)  |  26  |/I/O|
 +
 +The HDD access LED is nonstandard and mapped to pin 34 of the 50-pin internal SCSI connector. Pulling it low turns on the HDD LED. Most standard SCSI HDDs connect this pin to ground, resulting in the HDD LED staying permanently on.
  
x68000/hard_disk.txt · Last modified: 2023/07/04 17:49 by TD-Linux