diff options
author | 2018-05-18 13:32:56 -0400 | |
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committer | 2018-05-18 13:40:29 -0400 | |
commit | 0ba652e723036746aa1b1ac665411bee83771654 (patch) | |
tree | ba3cf42c70bf33ad22c07ad85b9d41f863a373e7 /src/devices/cpu/h6280 | |
parent | e5dc17a4881d2b9ce4573b42d825cb6456bf529c (diff) |
diexec: Interrupt API changes (nw)
- PULSE_LINE is no longer a value. Existing uses have been changed to pulse_input_line with attotime::zero as the second argument.
- Formerly only INPUT_LINE_NMI and INPUT_LINE_RESET were allowed with PULSE_LINE. INPUT_LINE_NMI no longer receives special handling; instead, CPU devices must specify which of their input lines are edge-triggered and thus may be used with zero-width pulses by overriding the execute_input_edge_triggered predicate. INPUT_LINE_RESET is still special-cased, however.
- execute_default_irq_vector now allows a different default vector to be specified for each input line. This added flexibility may or may not prove useful.
Diffstat (limited to 'src/devices/cpu/h6280')
-rw-r--r-- | src/devices/cpu/h6280/h6280.cpp | 11 | ||||
-rw-r--r-- | src/devices/cpu/h6280/h6280.h | 1 |
2 files changed, 12 insertions, 0 deletions
diff --git a/src/devices/cpu/h6280/h6280.cpp b/src/devices/cpu/h6280/h6280.cpp index 2a38aed615f..4fb069d5390 100644 --- a/src/devices/cpu/h6280/h6280.cpp +++ b/src/devices/cpu/h6280/h6280.cpp @@ -2265,6 +2265,17 @@ uint32_t h6280_device::execute_input_lines() const //------------------------------------------------- +// execute_input_edge_triggered - return true if +// the input line has an asynchronous edge trigger +//------------------------------------------------- + +bool h6280_device::execute_input_edge_triggered(int inputnum) const +{ + return inputnum == H6280_NMI_STATE; +} + + +//------------------------------------------------- // execute_set_input - act on a changed input/ // interrupt line //------------------------------------------------- diff --git a/src/devices/cpu/h6280/h6280.h b/src/devices/cpu/h6280/h6280.h index 22155e0edb6..7c73187ab36 100644 --- a/src/devices/cpu/h6280/h6280.h +++ b/src/devices/cpu/h6280/h6280.h @@ -81,6 +81,7 @@ protected: virtual uint32_t execute_min_cycles() const override; virtual uint32_t execute_max_cycles() const override; virtual uint32_t execute_input_lines() const override; + virtual bool execute_input_edge_triggered(int inputnum) const override; virtual void execute_run() override; virtual void execute_set_input(int inputnum, int state) override; |