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Diffstat (limited to 'src/devices/sound/qsound.cpp')
-rw-r--r-- | src/devices/sound/qsound.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/devices/sound/qsound.cpp b/src/devices/sound/qsound.cpp index 04d7648223d..dd4960b1211 100644 --- a/src/devices/sound/qsound.cpp +++ b/src/devices/sound/qsound.cpp @@ -27,6 +27,9 @@ assumed that reading PIO with PSEL low when INT is asserted will return the address and cause INT to be de-asserted, and reading PIO with PSEL low when int is not asserted will return the data word. + The DSP program will only respond to one external interrupt per + sample interval (i.e. the maximum command rate is the same as the + sample rate). The DSP program uses 2 kilowords of internal RAM and reads data from external ROM while executing from internal ROM. As such, it |