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r26754 Wednesday 25th December, 2013 at 23:29:44 UTC by Roberto Fresca
Truco-Tron: Reversed and documented almost all PCB's ICs [Roberto Fresca]
[src/mame/drivers]truco.c

trunk/src/mame/drivers/truco.c
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1414  - Replacing the battery backed ram with an eeprom is not really an option since the game stores the
1515    current credits count in the battery backed ram.
1616  - System clock is 12 Mhz. The CPU clock is unknown.
17  - The Alternate Gfx mode is funky. Not only it has different bitmaps, but also the strings with the
17  - The Alternate GFX mode is funky. Not only it has different bitmaps, but also the strings with the
1818    game options are truncated. Title is also truncated.
19  - At least one bootleg board exist.
1920
20
2121*******************************************************************************************************
2222
2323  Mini-board (6"x 7") silkscreened 8901 REV.C
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6666
6767  MARKED   PINS     ID    TYPE        DETAILS
6868
69  - U1 : 40-pin IC  YES   CPU         MOTOROLA M6809
70  - U2 : 28-pin IC  YES   ROM U2      M27128A
71  - U3 : 28-pin IC  YES   ROM U3      M27128A
72  - U4 : 40-pin IC  YES   PIA         ST EF6821P
73  - U5 : 16-pin IC  NO
74  - U6 : 16-pin IC  NO
75  - U7 : 16-pin IC  NO
76  - U8 : 16-pin IC  NO
77  - U9 : 40-pin IC  YES   CRTC        HD6845 / UM6845
78  - U10: 28-pin IC  YES   RAM         ???? (Battery NVR)
79  - U11: 14-pin IC  NO
80  - U12: 14-pin IC  NO
81  - U13: 20-pin IC  NO
82  - U14: 20-pin IC  NO
83  - U15: 20-pin IC  NO
84  - U16: 20-pin IC  NO
85  - U17: 14-pin IC  NO
86  - U18: 14-pin IC  NO
87  - U19: 16-pin IC  YES   WATCHDOG    MAXIM MAX691
88  - U20: 16-pin IC  YES   DARLINGTON  ULN2003
69  - U1 : 40-pin IC  YES   CPU         MOTOROLA M6809EP               (8-bit microprocessor)
70  - U2 : 28-pin IC  YES   ROM         M27128A                        (NMOS 128K 16K x 8 UV EPROM)
71  - U3 : 28-pin IC  YES   ROM         M27128A                        (NMOS 128K 16K x 8 UV EPROM)
72  - U4 : 40-pin IC  YES   I/O         ST EF6821P                     (PIA: Peripheral Interface Adapter)
73  - U5 : 16-pin IC  YES   TTL         ST M74HC157B1                  (Quad 2 Channel Multiplexer)
74  - U6 : 16-pin IC  YES   TTL         ST M74HC157B1                  (Quad 2 Channel Multiplexer)
75  - U7 : 16-pin IC  YES   TTL         ST M74HC157B1                  (Quad 2 Channel Multiplexer)
76  - U8 : 16-pin IC  YES   TTL         ST M74HC157B1                  (Quad 2 Channel Multiplexer)
77  - U9 : 40-pin IC  YES   CRTC        HD6845 / UM6845 / GS GM68A45S  (CRT Controller)
78  - U10: 28-pin IC  YES   RAM         KM62256BLP-10                  (32K x 8 Low Power CMOS Static RAM)
79  - U11: 14-pin IC  YES   TTL         SN74LS95BN                     (4-bit Parallel-Access Shift Registers)
80  - U12: 14-pin IC  YES   TTL         SN74LS95BN                     (4-bit Parallel-Access Shift Registers)
81  - U13: 20-pin IC  YES   TTL         SN74LS244N                     (Octal Buffers and Line Drivers with 3-State outputs)
82  - U14: 20-pin IC  YES   TTL         HD74LS374                      (Octal D-type Flip-Flops with noninverted 3-state output)
83  - U15: 20-pin IC  NO    PLD         ???
84  - U16: 20-pin IC  YES   PLD         PALCE16V8H-25                  (EE CMOS Zero-Power 20-Pin Universal Programmable Array Logic)
85  - U17: 14-pin IC  YES   TTL         HD74LS00P                      (Quadruple 2-Input NAND Gates)
86  - U18: 14-pin IC  YES   TTL         KS74HCTLS86N                   (Quad 2−Input Exclusive OR Gate)
87  - U19: 16-pin IC  YES   WATCHDOG    MAXIM MAX691                   (Microprocessor Supervisory Circuits)
88  - U20: 16-pin IC  YES   DARLINGTON  ULN2003                        (7 NPN Darlington transistor pairs with high voltage and current capability)
8989
9090
9191                             M6809
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494494   ROM_LOAD( "truco.u2",   0x0c000, 0x4000, CRC(ff355750) SHA1(1538f20b1919928ffca439e4046a104ddfbc756c) )
495495ROM_END
496496
497/*    YEAR  NAME     PARENT  MACHINE  INPUT    INIT  ROT    COMPANY           FULLNAME     FLAGS  */
498GAME( 198?, truco,   0,      truco,   truco, driver_device,   0,    ROT0, "Playtronic SRL", "Truco-Tron", 0 )
497/*    YEAR  NAME     PARENT  MACHINE  INPUT    STATE            INIT  ROT    COMPANY           FULLNAME     FLAGS  */
498GAME( 198?, truco,   0,      truco,   truco,   driver_device,   0,    ROT0, "Playtronic SRL", "Truco-Tron", 0 )

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