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author ClawGrip <clawgrip@hotmail.com>2019-08-07 15:45:22 +0200
committer GitHub <noreply@github.com>2019-08-07 15:45:22 +0200
commitbfbd9ff1326ef986f42233ee4c939012099d648b (patch)
tree066bba7c0fce4c8c21abd7850ca344f072484067
parent1f2b5aafdb652f88150c6083f25dcb70acd70106 (diff)
ml20.cpp: Add small note (mw)
-rw-r--r--src/mame/drivers/ml20.cpp71
1 files changed, 37 insertions, 34 deletions
diff --git a/src/mame/drivers/ml20.cpp b/src/mame/drivers/ml20.cpp
index 17c29d14c2d..a2a4bfc663a 100644
--- a/src/mame/drivers/ml20.cpp
+++ b/src/mame/drivers/ml20.cpp
@@ -6,40 +6,43 @@
Access control device with dot-matrix display
- ML20/232
- ____________________________________________________
- | ________ ________ ________ ______ __ |
- | |74HC04N|M74HC139B1 |__DP1__| |_XT1_| : CN7 |
- |__ _______________ ____________ JP2 |
- ||C||IC4 M27C512 || |D70320L-8 | (CN4)__ |
- ||N||_____________|| |NEC V25 | ______ |C| |
- ||2|_______________ | | |BATT | |N| |
- ||_||KM681000CLP-7L| | | |_____| |6| |
- |__ |______________| |___________| o <- LED |
- ||C| ________ ________ .. <- JP1 |
- ||N||_M6242B_| MAX693CPE __ |
- ||8| ________ |C|__ |
- | ULN2003A |N|| ||
- | :<-JP4 ________ ____ |3||_|<- LM2575T
- | ________ SN74HC05N TLP504A |_| |
- |__ MAX232CPE |
- || | MEISEI ________ |
- || | ________ P12 P12 MAX232CPE |
- ||_| 26LS32ACN __ |
- | :: <-JP5 |F||
- | ____________ ________ ________ |U||
- | |___CN10____| |_CN11__| |_______| ________ |S||
- | |___________| |_____ | |_CN9___| |_CN1___| E |
- |___________________________________________________|
-
- XT1 = 16.000 MHz
- DP1 = 8 dipswitches
- CN4 = Speaker
- CN9 = RS232
- CN8 = Power Out
- CN6 = Magnetic stripe reader
- CN2 = Display (dot-matrix, 2 lines x 16 characters, 5x7 each character)
- CN7 = Keypad
+ ML20/232
+ ____________________________________________________
+ | ________ ________ ________ ______ __ |
+ | |74HC04N|M74HC139B1 |__DP1__| |_XT1_| : CN7 |
+ |__ _______________ ____________ JP2 |
+ ||C||IC4 M27C512 || |D70320L-8 | (CN4)__ |
+ ||N||_____________|| |NEC V25 | ______ |C| |
+ ||2|_______________ | | |BATT | |N| |
+ ||_||KM681000CLP-7L| | | |_____| |6| |
+ |__ |______________| |___________| o <- LED |
+ ||C| ________ ________ .. <- JP1 |
+ ||N||_M6242B_| MAX693CPE __ |
+ ||8| ________ |C|__ |
+ | XT2 ULN2003A |N|| ||
+ | :<-JP4 ________ ____ |3||_|<- LM2575T
+ | ________ SN74HC05N TLP504A |_| |
+ |__ MAX232CPE :<-JP8 |
+ || | MEISEI ________ |
+ || | ________ P12 P12 MAX232CPE |
+ ||_| 26LS32ACN __ |
+ | :: <-JP5 |F||
+ | ____________ ________ ________ |U||
+ | |___CN10____| |_CN11__| |_______| ________ |S||
+ | |___________| |_____ | |_CN9___| |_CN1___| E |
+ |___________________________________________________|
+
+ XT1 = 16.000 MHz
+ XT2 = S873
+ DP1 = 8 dipswitches
+ CN4 = Speaker
+ CN9 = RS232
+ CN8 = Power Out
+ CN6 = Magnetic stripe reader
+ CN2 = Display (dot-matrix, 2 lines x 16 characters, 5x7 each character)
+ CN7 = Keypad
+
+ Display = Hyundai HC16203-A (Hitachi HD44780A00 based).
Status:
- Shows current date and time, then presumably waits for keypad input