2.4 KiB
| layout | title | permalink |
|---|---|---|
| page | RL11 Disk Controller | /devices/pdp11/rl11/ |
RL11 Disk Controller
The RL11 Disk Controller controls up to four RL01 or RL02 disk drives, which in turn read/write RL01K or RL02K disk cartridges, respectively.
RL01K disks are single-platter cartridges with 256 tracks per side, 40 sectors per track, and a sector size of 256 bytes, for a total capacity of 5Mb (5,242,880 bytes).
RL02K disks are single-platter cartridges with 512 tracks per side, 40 sectors per track, and a sector size of 256 bytes, for a total capacity of 10Mb (10,485,760 bytes).
Machines containing the RL11 Component include:
PCjs has archived a selection of RL01K and RL02K disk images from Paul Nankervis for use by those machines, which are also listed in the following RL11 Device XML file:
which is typically referenced by a Machine XML file as:
<device ref="/devices/pdp11/rl11/default.xml"/>
Device XML files not only configure a device, but also list all the resource the device will use, and define UI elements used to control the device, such as choosing which disks should be "auto-mounted" by the RL11 device. For example:
<?xml version="1.0" encoding="UTF-8"?>
<device id="rl11" type="rl11" autoMount='{RL0:{path:"http://archive.pcjs.org/disks/dec/rl02k/RL02K-XXDP.json"}}' pos="left" width="35%" padLeft="8px" padBottom="8px">
<name>Disk Drive Controls</name>
<control type="container">
<control type="list" binding="listDrives"/>
<control type="list" binding="listDisks">
<disk id="disk01" name="XXDP+ Diagnostics" path="http://archive.pcjs.org/disks/dec/rl02k/RL02K-XXDP.json"/>
</control>
<control type="button" binding="loadDisk">Load</control>
<control type="button" binding="bootDisk">Boot</control>
<control type="description" binding="descDisk" padRight="8px"/>
<control type="file" binding="mountDisk"/>
</control>
</device>