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author Ryan Holtz <rholtz@batcountryentertainment.com>2010-08-26 03:27:52 +0000
committer Ryan Holtz <rholtz@batcountryentertainment.com>2010-08-26 03:27:52 +0000
commitdc3a3e86b4a7106799eac54c2321c5951beb60e0 (patch)
tree0b61b331fa183ff5b8043526499ccbe54f66cb48 /src/emu/machine
parentacddc6272024234e3107c9e2688d5839453e9c11 (diff)
Corrected some comments in 6821pia.h, no whatsnew
Diffstat (limited to 'src/emu/machine')
-rw-r--r--src/emu/machine/6821pia.h23
1 files changed, 11 insertions, 12 deletions
diff --git a/src/emu/machine/6821pia.h b/src/emu/machine/6821pia.h
index 661f8b6f75f..0f05acd72ed 100644
--- a/src/emu/machine/6821pia.h
+++ b/src/emu/machine/6821pia.h
@@ -3,18 +3,17 @@
Motorola 6821 PIA interface and emulation
Notes:
- * pia6821_get_port_b_z_mask() gives the caller the bitmask
- that show which bits are high-impendance when
- reading port B, thus neither 0 or 1.
- pia6821_get_output_cb2_z() returns the same
- information for the CB2 pin
- * pia6821_set_port_a_z_mask allows the input callback to
- indicate which port A bits are disconnected.
- For these bit, the read operation will return the
- output buffer's contents
- * the 'alt' interface functions are used when the A0 and A1
- address bits are swapped
- * all 'int' data or return values are Boolean
+ * get_port_b_z_mask() gives the caller the bitmask that shows
+ which bits are high-impendance when reading port B, and thus
+ neither 0 or 1. get_output_cb2_z() returns the same info
+ for the CB2 pin.
+ * set_port_a_z_mask allows the input callback to indicate
+ which port A bits are disconnected. For these bits, the
+ read operation will return the output buffer's contents.
+ * The 'alt' interface functions are used when the A0 and A1
+ address bits are swapped.
+ * All 'int' data or return values are bool, and should be
+ converted to bool at some point.
**********************************************************************/