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-rw-r--r--src/emu/machine/pit8253.h23
1 files changed, 3 insertions, 20 deletions
diff --git a/src/emu/machine/pit8253.h b/src/emu/machine/pit8253.h
index aa3997d4766..a6e4080aad9 100644
--- a/src/emu/machine/pit8253.h
+++ b/src/emu/machine/pit8253.h
@@ -1,9 +1,11 @@
/***************************************************************************
Intel 8253/8254
-
Programmable Interval Timer
+ As uPD71054C (8MHz), uPD71054C-10 (10MHz) - it is a clone of Intel 82C54
+ also available in 28-pin QFP and 44-pin PLCC (many pins NC)
+
_____ _____
D7 1 |* \_/ | 24 VCC
D6 2 | | 23 _WR
@@ -19,25 +21,6 @@
GND 12 |_____________| 13 OUT1
-**********************************************************************
- _____ _____
- D7 <-> 1 |* \_/ | 24 --- Vdd
- D6 <-> 2 | | 23 <-- _WR
- D5 <-> 3 | | 22 <-- _RD
- D4 <-> 4 | | 21 <-- _CS
- D3 <-> 5 | | 20 <-- A1
- D2 <-> 6 | uPD71054C | 19 <-- A0
- D1 <-> 7 | | 18 <-- CLK2
- D0 <-> 8 | | 17 --> OUT2
- CLK0 --> 9 | | 16 <-- GATE2
- OUT0 <-- 10 | | 15 <-- CLK1
- GATE0 --> 11 | | 14 <-- GATE1
- GND --- 12 |_____________| 13 --> OUT1
-
- uPD71054C (8MHz), uPD71054C-10 (10MHz) - it is a clone of Intel 82C54
- also available in 28-pin QFP and 44-pin PLCC (many pins NC)
-
-
***************************************************************************/
#ifndef __PIT8253_H__