x68000:floppy_pinout
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x68000:floppy_pinout [2015/01/29 23:48] – eidis | x68000:floppy_pinout [2015/02/02 01:22] – eidis | ||
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You can use a [[PC Floppy Drive]] if you can do without the sexy extra features (soft-eject, | You can use a [[PC Floppy Drive]] if you can do without the sexy extra features (soft-eject, | ||
- | {{http:// | + | | {{: |
+ | | IDC34 and 34-Pin Edge Connector | ||
- | | 1|/Disk Type Select*|Out|Disk type selection signal| | + | {{ : |
- | | 2|NC| - |Not connected| | + | |
- | | 3|/Drive Select 3|Out|Drive selection signal 3| | + | |
- | | 4|/ | + | ^ Ext. ^ Int. ^Signal |
- | | 5|/Drive Select 0|Out|Drive selection signal 0| | + | | 1 |
- | | 6|/Drive Select 1|Out|Drive selection signal 1| | + | | 2 |
- | | 7|/Drive Select 2|Out|Drive selection signal 2| | + | | 3 |
- | | 8|/Motor On|Out|Motor starting signal| | + | | 4 |
- | | 9|/ | + | | 5 |
- | |10|/ | + | | 6 |
- | |11|/Write Data|Out|Write data signal| | + | | 7 |
- | |12|/Write Gate|Out|Write gate signal| | + | | 8 |
- | |13|/Track 00| In |Back to track 0| | + | | 9 |
- | |14|/Write Protect| | + | | 10 |
- | |15|/Read Data| In |Read data signal| | + | | 11 |
- | |16|/Side Select|Out|Head switching signal| | + | | 12 |
- | |17|/ | + | | 13 |
- | |18|NC| | + | | 14 |
- | |19|NC| | + | | 15 |
- | |20|/Option Select 0*|Out|Option select 0| | + | | 16 |
- | |21|/Option Select 1*|Out|Option Select 1| | + | | 17 |
- | |22|/Option Select 2*|Out|Option select 2 (CZ-600C dedicated signal)| | + | | 18 |
- | |23|/Option Select 3*|Out|Option Select 3| | + | | 19 |
- | |24|/ | + | | 20 |
- | |25|/Eject Mask*|Out|Eject mask signal| | + | | 21 |
- | |26|/LED Blink*|Out|LED flashing signal| | + | | 22 |
- | |27|/Disk In*| In |Disk insertion signal| | + | | 23 |
- | |28|/ERR Disk*| | + | | 24 |
- | |29|/FDD INT*| In |Disk interrupt signal| | + | | 25 |
- | |30|Ground|Out|Ground| | + | | 26 |
- | |31|Ground|Out|Ground| | + | | 27 |
- | |32|Ground|Out|Ground| | + | | 28 |
- | |33|Ground|Out|Ground| | + | | 29 |
- | |34|Ground|Out|Ground| | + | | 30 |
- | |35|Ground|Out|Ground| | + | | 31 |
- | |36|Ground|Out|Ground| | + | | 32 |
- | |37|NC| | + | | 33 |
+ | | 34 | ||
+ | | 35 | ||
+ | | 36 | ||
+ | | 37 | ||
* Not available on standard Shugart drives | * Not available on standard Shugart drives | ||
+ | |||
**Drive Selection** | **Drive Selection** | ||
Line 49: | Line 55: | ||
Drive selection occurs when a drive' | Drive selection occurs when a drive' | ||
- | **Index/Sector** | + | **Index** |
This interface signal is provided by the drive each time an index or sector hole is sensed at the Index/ | This interface signal is provided by the drive each time an index or sector hole is sensed at the Index/ | ||
Line 55: | Line 61: | ||
**Motor On** | **Motor On** | ||
- | In order for the host system to read or write data the DC drive motor must be turned on. This is accomplished by activating the line -MOTOR ON. A 0.5 second delay must be introduced after activating this line to allow the motor to come up to speed before reading or writing can be accomplished. The motor must be turned off by the host system by deactivating the MOTOR ON line. This should be done if the drive has not received a new command within two (2) seconds (10 revolutions of diskette) after completing the execution of a command. This will insure maximum motor and media life. | + | In order for the host system to read or write data the DC drive motor must be turned on. This is accomplished by activating the line -MOTOR ON. A 0.5 second delay must be introduced after activating this line to allow the motor to come up to speed before reading or writing can be accomplished. The motor must be turned off by the host system by deactivating the MOTOR ON line. This should be done if the drive has not received a new command within two (2) seconds (10 revolutions of diskette) after completing the execution of a command. |
**Direction Select** | **Direction Select** | ||
Line 75: | Line 81: | ||
**Write Data** | **Write Data** | ||
- | This interface line provides the data to be written on the diskette. Each transition from a logical one level to a logical zero level, will cause the current through the read/write heads to be reversed thereby writing a data bit. This line is enabled by Write Gate being active. Write Data must be inactive during a read operation. A Write Data clamp is provided on the PCB at the interface which holds the WRITE DATA line at a logical zero whenever Write Gate is inactive. | + | This interface line provides the data to be written on the diskette. Each transition from a logical one level to a logical zero level, will cause the current through the read/write heads to be reversed thereby writing a data bit. This line is enabled by Write Gate being active. Write Data must be inactive during a read operation. |
+ | **Write Gate** | ||
+ | The active state of this signal, or logical zero, enables Write Data to be written on the diskette. The inactive state or logical one, enables the read data logic and stepper logic. | ||
+ | |||
+ | **Track 00** | ||
+ | |||
+ | The active or logical zero state of this interface signal indicates when the drive' | ||
+ | |||
+ | **Write Protect** | ||
+ | |||
+ | This interface signal is provided by the drive to give the user an indication when a Write Protected Diskette is installed. The signal is logical zero level when it is protected. Under normal operation, the drive will inhibit writing with a protected diskette installed in addition to notifying the interface. | ||
+ | |||
+ | **Side Selection** | ||
+ | |||
+ | Head Selection is controlled via the I/O signal line designated SIDE SELECT. A plus logic level on the SIDE SELECT line selects the read/write head on the lower side 0 of the diskette. A minus logic level selects the side 1 read/write head. | ||
+ | |||
+ | **Ready** | ||
+ | |||
+ | Signal indicating that FDD is ready to operate. This signal goes to LOW level, when the FDD is selected and the rotational speed of the floppy disk has reached 90% of the specification. | ||
---- | ---- | ||
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Info also available [[http:// | Info also available [[http:// | ||
+ | |||
+ | Signal descriptions were taken from [[https:// |
x68000/floppy_pinout.txt · Last modified: 2019/08/27 20:45 by 127.0.0.1