Last Updated: 17/04/18
This page is dedicated to the QL-SD add-on for the QL. The
hardware was designed by Peter Graf and currently built and sold by
Paul Veltjens through SellMyRetro.com.
It consists of two small boards fitted to the QL, one of which replaces
one of the original microdrive drives, since a microdrive slot is a
suitable size for a SD-HC card socket. Note that
only SD-HC cards can be used with QL-SD, not the older lower capacity
SD cards. A second SDHC card socket can be added at the other microdrive slot. Keeping the
SDHC card inside the QL case without removing a microdrive is also possible.
If anyone would like to make available any more software,
documentation, or articles about QL-SD, please email it to me.
QL-SD manual -
(850K) PDF file
QL-SD Starter Pack
- (237K) the software supplied with QL-SD
- Specification of a simple and open interface for QL emulators, so
native hardware drivers on the QL side can access block device images
present on the emulator's host filesystem.
bdi_spec.txt - (3K) plain
BDI spec.pdf - (297K)
PDF file version
QL-SD Driver Sources
- (547K) released under GNU General Public License, these are the
source files for the QL-SD drivers. Please read the PDF document
supplied within the archive for guidance. [21/10/14]
QL-SD Hardware Sources - (69K) released under GNU General Public License.
Note that these are zip files.
(20K) - a driver to use standard qxl.win drives with QL-SD. Please read
the documentation (in QL doc and text format, and as PDF. (Wolfgang
qlsd_newdriver_src.zip (25K) - sources for the new QL-SD driver. You will also need the lastest sources for SMSQ/E.
(Wolfgang Lenerz) [12/02/18]
(30K) - enhanced version of the above qxl.win driver for QL-SD, updated
by Marcel Kilgus. These should work with later QDOS versions (e.g. JS,
MG, Minerva) and SMSQ/E. For reliable use with Gold Card/Super Gold
Card, an update of a chip on the QL-SD may be necessary, contact Marcel
Kilgus for cost and availability. Wolfgang Lenerz says that the sources
will be included in the next SMSQ/E release (current SMSQ/E version is
V3.32 at the time of writing) [17/04/18]
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