diff options
Diffstat (limited to 'src/mame/drivers/mgames.cpp')
-rw-r--r-- | src/mame/drivers/mgames.cpp | 50 |
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" |