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-rw-r--r--src/devices/bus/spectrum/kempdisc.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/devices/bus/spectrum/kempdisc.cpp b/src/devices/bus/spectrum/kempdisc.cpp
index 852b743db96..7faf0e39370 100644
--- a/src/devices/bus/spectrum/kempdisc.cpp
+++ b/src/devices/bus/spectrum/kempdisc.cpp
@@ -14,6 +14,8 @@
COPY - tape to disc transfer utility
FORMAT "discname": PRINT drive#, tracks#, sides#, steprate - format disc
+ Manual https://archive.org/download/World_of_Spectrum_June_2017_Mirror/World%20of%20Spectrum%20June%202017%20Mirror.zip/World%20of%20Spectrum%20June%202017%20Mirror/sinclair/hardware-info/k/KempstonDiscInterface_Manual.pdf
+
Notes/TODO:
- schematics is missing, actual I/O ports decode might be not right
- find out port 0xDF 3 MSB bits wiring, probably FDC /DDEN, /MR