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author hap <happppp@users.noreply.github.com>2018-11-28 11:46:06 +0100
committer hap <happppp@users.noreply.github.com>2018-11-28 11:46:06 +0100
commit55192df364ab449169c5ddea425257b490326d7f (patch)
tree238f3abfa5bda8161ec6852673433e4f3b455f35
parentdd9bac131c44aa761376080b0b50fd945643ac78 (diff)
pic8259: re-add comment (nw)
-rw-r--r--src/devices/machine/pic8259.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/devices/machine/pic8259.h b/src/devices/machine/pic8259.h
index 73a13e9d757..0b85efd9ac1 100644
--- a/src/devices/machine/pic8259.h
+++ b/src/devices/machine/pic8259.h
@@ -33,9 +33,9 @@ class pic8259_device : public device_t
public:
pic8259_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
- auto out_int_callback() { return m_out_int_func.bind(); }
- auto in_sp_callback() { return m_in_sp_func.bind(); }
- auto read_slave_ack_callback() { return m_read_slave_ack_func.bind(); }
+ auto out_int_callback() { return m_out_int_func.bind(); } // Interrupt request output to CPU or master 8259 (active high)
+ auto in_sp_callback() { return m_in_sp_func.bind(); } // Slave program select (VCC = master; GND = slave; pin becomes EN output in buffered mode)
+ auto read_slave_ack_callback() { return m_read_slave_ack_func.bind(); } // Cascaded interrupt acknowledge request for slave 8259 to place vector on data bus
uint8_t read(offs_t offset);
void write(offs_t offset, uint8_t data);