Differences

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--- x68000:adding_an_fdx68_to_x68000 [2018/11/27 03:00] – leonk
+++ x68000:adding_an_fdx68_to_x68000 [2018/11/29 07:58] – leonk
@@ Line 22: / Line 22: @@
 The original author has great instructions found here: http://www.geocities.jp/kugimoto0715/fdx68/index.html
 Use google translate to get the details.  The rest of this page was a result of edited google translate of original page (pulled 11/26/2018)
+The following examples will not cover all possible combinations, but one should find the closest system and adjust accordingly based on connector and how they want to use the device.  It is easiest to connect the FDX68 externally, but it can also be used internally (adjust drive assignment accordingly).  Here are some important things to keep in mind:
+   * Newer systems have an external switch to select internal floppy drive assignment
+   * Older systems always assign internal FD 0/1 and you must set FDX68 to 2/3
+   * HumanOS can boot from any FD (0/1/2/3) So you can boot from external FD to do things like change SRAM settings or install SASI boot loader
+   * Single disk games can boot from FD 2/3
+   * Multi disk games will look for disk 2+ only on FD 0/1.  This might be an issue with older systems that don't allow you to set internal FD assignment
+   * System will not boot a hard drive if FD0/1 are not present. So you must always have FDX68 running as drive 0/1 or you must have internal drives connected as 0/1 if booting SCSI devices.
+__**X68000 XVI Compact:**__
+__**Connection Method:**__
+The external FDD connecter is labelled "EXTERNAL FDD" on the back of the X68000. This is a very unusual port known as the "miniature delta ribbon (MDR) 40 position female connector". In order to connect an external device to this port an MDR 40 position male connector is necessary. The FDX68 author made a cable for converting this port to a standard 34-pin ribbon cable connector. One should be able to purchase the MDR 40 position male connector at many online retail stores. You will also need to purchase matching enclosure shell for the connector.
+{{:x68000:fdx68_xvi_fd_connector.png?nolink&400|}}
+{{:x68000:fdx68_connector_1.png?nolink&400|}}
+{{:x68000:fdx68_connector_2.png?nolink&400|}}
+When making your own cable to convert from MDR 40 to the 34-pin connector found on the FDX68, the following conversion table should be referenced. The pin assignment for creating the conversion cable is as follows. After soldering the pins, one should confirm they cable is soldered correctly using a voltmeter.
+{{:x68000:FDX68_connector_pingout.png?nolink&400|}}
+Here's how one connects the FDX68 externally to the X68000 using this custom cable
+{{:x68000:FDX68_xvi.png?nolink&400|}}