summaryrefslogtreecommitdiffstatshomepage
diff options
context:
space:
mode:
author RobertoFresca <robbie@mamedev.org>2016-05-26 21:18:34 -0300
committer RobertoFresca <robbie@mamedev.org>2016-05-26 21:18:34 -0300
commitcfdec4e84f47acb76cdc6a7c2001e07cd5e3a394 (patch)
treebd207b54bc13e3067edbaf4800e5be18dcfdfe59
parent0023938081dd950c5053b487c08f6a04dea7be78 (diff)
Merit Match Games driver: Added technical notes and corrected
CRT 810 layout + old notes. [Roberto Fresca]
-rw-r--r--src/mame/drivers/mgames.cpp50
1 files changed, 17 insertions, 33 deletions
diff --git a/src/mame/drivers/mgames.cpp b/src/mame/drivers/mgames.cpp
index 61fc919d645..b56f7de64ca 100644
--- a/src/mame/drivers/mgames.cpp
+++ b/src/mame/drivers/mgames.cpp
@@ -2,8 +2,9 @@
// copyright-holders:Angelo Salese, Roberto Fresca, David Haywood
/*********************************************************************************
- Merit Industries Match Games (1981)
- -----------------------------------
+ Match Games.
+ CRT 100 + CRT 810 boards system.
+ Merit Industries, 1981.
Driver by Angelo Salese, David Haywood & Roberto Fresca.
@@ -80,7 +81,7 @@
---------------
1x OSC = 18.000 MHz.
- 1x CPU = Zilog Z80 (Z0840006PSC / 9512 / 2K).
+ 1x CPU = Zilog Z80 (Z0840006PSC).
4x 74LS253N (multiplexers).
4x MM2114N-3 (4096-Bit Static RAM).
2x SCM5101E (256x4 Static RAM).
@@ -88,7 +89,7 @@
The PCB has a socket for two standard AA batteries
- MAIN BOARD:
+ MAIN BOARD CRT 100:
.------------------------. .-------------------. .---------------------------.
| | ||||||||||||||||||||| | .------------. |
| '-' J2 '-' -|4.7 Ohm 10% |- |
@@ -139,7 +140,6 @@
| '-----' '-----' '-----' '-----' |
'----------------------------------------------------------------------------'
-
U13 = MLTI 0 U68 = CGM 0
U14 = MLTI 1 U67 = CGM 1
U15 = MLTI 2 U66 = CGM 2
@@ -151,49 +151,33 @@
J1 = Jumpers bank? (see multiplexed port)
- VIDEO I/O BOARD CRT810:
+ VIDEO I/O BOARD CRT 810:
.-------------------.
- |||||||||||||||||||||
- .-----------------------' '----------------------.
+ .-----------------------|||||||||||||||||||||----------------------.
| |
| LM380N |
- | |
- | MC1455P |
+ | DISCRETE |
+ | CIRCUITRY MC1455P |
| |
| |
- | SW 7407-N SW 7407-N SW 7407-N SW 7407-N |
- | 21430 7301 21430 7301 21430 7301 21430 7301 |
+ | ML7805 |
+ | SW 7407-N SW 7407-N SW 7407-N SW 7407-N +5V. |
| |
- | 74LS259N 74LS259N 74LS259N 74LS259N |
+ | 74LS259N 74LS259N 74LS259N MC7812 |
+ | +12V. |
| |
- '----------------. .----------------'
- ||||||||||||||||||||||||||||||||||
+ '----------------||||||||||||||||||||||||||||||||||----------------'
'--------------------------------'
- To J4 on Main Board
+ To J4 on Main Board
LM380N = 2.5W Audio Power Amplifier.
MC1455P = Direct Replacement for NE555 Timers.
- (Audio seems to be discrete).
+ (Audio IS discrete).
4x 7407N (Buffer Gates Non-Inverting).
4x 74LS259N (8-Bit Addressable Latches).
- 4x 7301 (HDSP?)(RED Seven Segment Displays).
-
- +---------+ Pin | Description
- | A | ----+------------
- | --- | 01 | Anode (4).
- | F| |B | 02 | Cathode F.
- | -G- | 03 | Cathode G.
- | E| |C | 04 | Cathode E.
- | --- | 05 | Cathode D.
- | D .DP| 06 | Anode (4).
- +---------+ 07 | Cathode DP.
- 08 | Cathode C.
- 09 | Cathode B.
- 10 | Cathode A.
-
**********************************************************************************
@@ -224,6 +208,7 @@
- Color system (no bipolar PROMs in the system), needs a reference
+ - Discrete sound.
**********************************************************************************/
@@ -231,7 +216,6 @@
#include "emu.h"
#include "cpu/z80/z80.h"
-//#include "sound/dac.h"
#include "machine/nvram.h"
#include "mgames.lh"