Added Xebec Support

[peclark1]

Added Xebec support by porting code from SCSI2SD V5 firmware. This code supports the First Class Peripherals Sider hard disk for Apple II

[morio]

@peclark1
Here are some suggestions for changes to the pull request.
I don't have a system to test them with, but if you do, could you verify they work?

[morio]

@peclark1
I think prefixing these string with Xebec would make them more inline with the two Xebec commands listed above.

ZuluSCSI-firmware/src/ZuluSCSI_log_trace.cpp

Lines 52 to 53 in 8671a0b

	case 0x0C: return "Xebec InitializeDriveCharacteristics";
	case 0x0F: return "Xebec WriteSectorBuffer";

"Xebec RAM Diagnostic"
"Xebec Drive Diagnostic"

[morio]

@peclark1
Does it work with a Xebec controller if you move these to vendor.c after here:

ZuluSCSI-firmware/lib/SCSI2SD/src/firmware/vendor.c

Lines 75 to 82 in 8671a0b

	else if (command == 0x0F &&
	scsiDev.target->cfg->quirks == S2S_CFG_QUIRKS_XEBEC)
	{
	// XEBEC S1410, WD100x: "Write Sector Buffer"
	scsiDev.dataLen = scsiDev.target->liveCfg.bytesPerSector;
	scsiDev.phase = DATA_OUT;
	scsiDev.postDataOutHook = doWriteBuffer;
	}

Like this:

 else if (command == 0x0F && 
 	scsiDev.target->cfg->quirks == S2S_CFG_QUIRKS_XEBEC) 
 { 
 	// XEBEC S1410, WD100x: "Write Sector Buffer" 
 	scsiDev.dataLen = scsiDev.target->liveCfg.bytesPerSector; 
 	scsiDev.phase = DATA_OUT; 
 	scsiDev.postDataOutHook = doWriteBuffer; 
 } 
  else if (command == 0xE0 && 
 	  scsiDev.target->cfg->quirks == S2S_CFG_QUIRKS_XEBEC)
  {
      // RAM Diagnostic
      // XEBEC S1410 controller
      // http://bitsavers.informatik.uni-stuttgart.de/pdf/xebec/104524C_S1410Man_Aug83.pdf
      // Stub, return success
  }
  else if (command == 0xE4 && 
 	  scsiDev.target->cfg->quirks == S2S_CFG_QUIRKS_XEBEC)
  {
      // Drive Diagnostic
      // XEBEC S1410 controller
      // Stub, return success
  }   

That way they would be in the same place with the other Xebec commands.
If you have a system to verify the code changes with, that would be great.

[peclark1]

sure, I'll build and give it a test.

[peclark1]

I totally missed the SCSI2SD source under the lib directory - feel like an idiot. I'll move my changes over there.

[peclark1]

Ok, changed made as requested. Tested both Initializing/Formatting new hard disk, as well as accessing partitions (prodos and dos).

[morio]

@peclark1 thanks for the great work!