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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<html>
<head>
<title>HwB: MSX External Diskdrive Connector (Offline)</title>
<meta name="Description" content="Pinout and description for the MSX External Diskdrive connector.">
<meta name="Keywords" content="HwB, pinout, hardware, connector, msx, external, diskdrive">
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name="Author" content="Hardware Book team">
</head>
<body background="../../images/bgr_grey.jpg" bgcolor="#C0C0C0" text="#000000" link="#0000EE" vlink="#551A8B" alink="#FF0000">
<p align="center"><a href="../index.html"><img src="../../images/mini_Back.gif" alt="GoTo Connector" border="0" width="64" height="48"></a><img src="../images/menu.gif" alt="CONNECTOR" width="400" height="48"><a href="../../index.html"><img src="../../images/mini_HwB.gif" alt="GoTo Main" border="0" width="64" height="48"></a></p>
<h1>MSX External Diskdrive</h1>
<p><img src="../../images/conn/dsub25f.gif" alt="25 PIN D-SUB FEMALE" WIDTH="171" HEIGHT="65"> (at the Computer)</p>
<p>25 PIN D-SUB FEMALE at the Computer.</p>
<table border="1">
<tr>
<th>Pin</th>
<th>Name</th>
<th>Dir</th>
<th>Description</th>
</tr>
<tr>
<td>1</td>
<td>+12V</td>
<td><img src="../../images/arrowr.gif" alt="-->" WIDTH="32" HEIGHT="9"></td>
<td>+12 VDC</td>
</tr>
<tr>
<td>2</td>
<td>+5V</td>
<td><img src="../../images/arrowr.gif" alt="-->" WIDTH="32" HEIGHT="9"></td>
<td>+5 VDC</td>
</tr>
<tr>
<td>3</td>
<td>+5V</td>
<td><img src="../../images/arrowr.gif" alt="-->" WIDTH="32" HEIGHT="9"></td>
<td>+5 VDC</td>
</tr>
<tr>
<td>4</td>
<td>/INDEX</td>
<td><img src="../../images/arrowl.gif" alt="<--" WIDTH="32" HEIGHT="9"></td>
<td>Sector hole passed sensor.</td>
</tr>
<tr>
<td>5</td>
<td>/DSEL1</td>
<td><img src="../../images/arrowr.gif" alt="-->" WIDTH="32" HEIGHT="9"></td>
<td>Drive Select 1</td>
</tr>
<tr>
<td>6</td>
<td>DIR</td>
<td><img src="../../images/arrowr.gif" alt="-->" WIDTH="32" HEIGHT="9"></td>
<td>Direction (0=In, 1=Dir)</td>
</tr>
<tr>
<td>7</td>
<td>/STEP</td>
<td><img src="../../images/arrowr.gif" alt="-->" WIDTH="32" HEIGHT="9"></td>
<td>Moves head 1 step in DIR direction.</td>
</tr>
<tr>
<td>8</td>
<td>WRITEDATA</td>
<td><img src="../../images/arrowr.gif" alt="-->" WIDTH="32" HEIGHT="9"></td>
<td>Write Data</td>
</tr>
<tr>
<td>9</td>
<td>/WRITEGATE</td>
<td><img src="../../images/arrowr.gif" alt="-->" WIDTH="32" HEIGHT="9"></td>
<td>Write Gate</td>
</tr>
<tr>
<td>10</td>
<td>/TRACK00</td>
<td><img src="../../images/arrowl.gif" alt="<--" WIDTH="32" HEIGHT="9"></td>
<td>Head is over Track 00 (outermost track)</td>
</tr>
<tr>
<td>11</td>
<td>/WRITEPROTECT</td>
<td><img src="../../images/arrowl.gif" alt="<--" WIDTH="32" HEIGHT="9"></td>
<td>Write protected disk (0=Write protected)</td>
</tr>
<tr>
<td>12</td>
<td>READDATA</td>
<td><img src="../../images/arrowl.gif" alt="<--" WIDTH="32" HEIGHT="9"></td>
<td>Data read from diskette.</td>
</tr>
<tr>
<td>13</td>
<td>/SIDESELECT</td>
<td><img src="../../images/arrowr.gif" alt="-->" WIDTH="32" HEIGHT="9"></td>
<td>Side Select (0=Side 1, 1=Side 0)</td>
</tr>
<tr>
<td>14</td>
<td>+12V</td>
<td><img src="../../images/arrowr.gif" alt="-->" WIDTH="32" HEIGHT="9"></td>
<td>+12 VDC</td>
</tr>
<tr>
<td>15</td>
<td>+12V</td>
<td><img src="../../images/arrowr.gif" alt="-->" WIDTH="32" HEIGHT="9"></td>
<td>+12 VDC</td>
</tr>
<tr>
<td>16</td>
<td>+5V</td>
<td><img src="../../images/arrowr.gif" alt="-->" WIDTH="32" HEIGHT="9"></td>
<td>+5 VDC</td>
</tr>
<tr>
<td>17</td>
<td>/DSEL1</td>
<td><img src="../../images/arrowr.gif" alt="-->" WIDTH="32" HEIGHT="9"></td>
<td>Select Drive 0</td>
</tr>
<tr>
<td>18</td>
<td>/MOTOR</td>
<td><img src="../../images/arrowr.gif" alt="-->" WIDTH="32" HEIGHT="9"></td>
<td>Motor On</td>
</tr>
<tr>
<td>19</td>
<td>READY</td>
<td><img src="../../images/arrowl.gif" alt="<--" WIDTH="32" HEIGHT="9"></td>
<td>Ready</td>
</tr>
<tr>
<td>20</td>
<td>GND</td>
<td><img src="../../images/arrow.gif" alt="---" WIDTH="32" HEIGHT="9"></td>
<td>Ground</td>
</tr>
<tr>
<td>21</td>
<td>GND</td>
<td><img src="../../images/arrow.gif" alt="---" WIDTH="32" HEIGHT="9"></td>
<td>Ground</td>
</tr>
<tr>
<td>22</td>
<td>GND</td>
<td><img src="../../images/arrow.gif" alt="---" WIDTH="32" HEIGHT="9"></td>
<td>Ground</td>
</tr>
<tr>
<td>23</td>
<td>GND</td>
<td><img src="../../images/arrow.gif" alt="---" WIDTH="32" HEIGHT="9"></td>
<td>Ground</td>
</tr>
<tr>
<td>24</td>
<td>GND</td>
<td><img src="../../images/arrow.gif" alt="---" WIDTH="32" HEIGHT="9"></td>
<td>Ground</td>
</tr>
<tr>
<td>25</td>
<td>GND</td>
<td><img src="../../images/arrow.gif" alt="---" WIDTH="32" HEIGHT="9"></td>
<td>Ground</td>
</tr>
</table>
<p><i>
Note: Direction is Computer relative Diskdrive.
</i></p>
<table border="0">
<tr>
<td><i><font size="2">Contributor:</font></i></td>
<td><i><font size="2">
<a href="../../comment/index.html">Joakim gren</a>
</font></i></td>
</tr>
</table>
<table border="0">
<tr>
<td><i><font size="2">Source:</font></i></td>
<td><i><font size="2">
Mayer's SV738 X'press I/O map
</font></i></td>
</tr>
</table>
<p><em><font size="2">
Copyright © <a href="../../comment/index.html">The Hardware Book Team</a> 1996-2004.<br>
May be copied and redistributed, partially or in whole, as appropriate.<br>
Document last modified: 2002-01-10
</font></em></p>
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