diff --git a/src/mess/drivers/cat.c b/src/mess/drivers/cat.c index dcd5c52f7be..7bb3ab0d6a3 100644 --- a/src/mess/drivers/cat.c +++ b/src/mess/drivers/cat.c @@ -162,46 +162,50 @@ IAI Swyft: Board name: 950-0001C "INFORMATION APPLIANCE INC. COPYRIGHT 1985" _________________|||||||||___________________________________________________________________________________ -| J8 [=======J3=======] ____ | -= / \ (E2) | -= Jx 74LS107 J5 |PB1 | uA339 MC3403 -----| +| J8 [=======J3=======] ____ Trans- | +== / \ (E2) former | +==Jx 74LS107 J5 |PB1 | uA339 MC3403 -----| | 7407 \____/ J7 = | Y1 "TIMING B" 74LS132 74LS175 -----| | ____________ 4N37 Relay -----| | TMS4256 74LS161 "DECODE E" "DISK 3.5C" | | J6 = | | MC6850P | -----| | TMS4256 74LS166 74HCT259 74LS299 '------------' MC3403 MC3403 _____| -| ___________________ ___________________ | = -| TMS4256 74LS373 | | | | | J1 = -| | MC68008P8 | | R6522P | | = -| TMS4256 74F153 '-------------------' '-------------------' MN4053 MN4053 | B = -| (E1) | R = -| TMS4256 74F153 74HCT08 __________ ___________________ MC14412 DS1489 | E = -| | | | | || | A = -| TMS4256 74F153 74HC4040E | AM27256 | | R6522P | || | K = -| '----------' '-------------------' || INFORMATION | O = -| TMS4256 74F153 "VIDEO 2B" .----------. J4 APPLIANCE INC. | U = -| | AM27256 | 74HC02 74HC374 || Copyright 1985 | T = -| TMS4256 74F153 74LS393 |__________| || UM95089 Y2 | = +| ___________________ ___________________ || | = +| TMS4256 74LS373 | | | | J2 | J1 = +| | MC68008P8 | | R6522P | || I P R | = +| TMS4256 74F153 '-------------------' '-------------------' MN4053 || MN4053 N R E | B = +| (E1) D O S | R = +| TMS4256 74F153 74HCT08 __________ ___________________ MC14412 DS1489 U E T I | E = +| | | | | || C S E S | A = +| TMS4256 74F153 74HC4040E | AM27256 | | R6522P | || T D C T | K = +| '----------' '-------------------' || INFORMATION O T O | O = +| TMS4256 74F153 "VIDEO 2B" .----------. J4 APPLIANCE INC. R I R | U = +| | AM27256 | 74HC02 74HC374 || Copyright 1985 S O S | T = +| TMS4256 74F153 74LS393 |__________| || UM95089 Y2 N | = |_____________________________[________J9___]__________________________________________________D13______|_____= *Devices of interest: J1: breakout of joystick, serial/rs232, hex-keypad, parallel port, and forth switch (and maybe cassette?) pins -Jx: 4 pin on top side, 6 pin on bottom side edge ?debug? connector (may have been intended to be J2, doesn't actually have a J number at all) -J3: Floppy Connector (standard 34 pin shugart) -J4: keyboard ribbon cable +J2: unpopulated 8-pin sip header, serial/rs232-related? +J3: Floppy Connector (standard DIL 34 pin mini-shugart/pc floppy connector) +J4: 18-pin sip header for keyboard ribbon cable J5: Berg type socket for supplying power (5v gnd gnd 12v) to the floppy drive J6: Phone connector, rj11 jack J7: Line connector, rj11 jack -J8: Video out/power in -J9: solder points for a rom expansion/replacement daughterboard, not populated -E1: jumper, unknown purpose -E2: jumper, unknown purpose +J8: 9-pin Video out/power in connector +J9: unpopulated holes for a DIL connector for a ROM expansion/shadow/replacement daughterboard +Jx: 4 pin on top side, 6 pin on bottom side edge ?debug? connector (doesn't have a Jx number) +E1: jumper, unknown purpose, not set +E2: jumper, unknown purpose, not set D13: LED R6522P (upper): parallel port via R6522P (lower): keyboard via -UM95089: Tone Dialer chip - +UM95089: DTMF Tone generator chip (if you read the datasheet this is technically ROM based!) +Y1: 15.8976Mhz, main clock? +Y2: 3.579545Mhz, used by the DTMF generator chip UM95089 (connects to pins 7 and 8 of it) +TMS4256-15NL - 262144 x 1 DRAM +PB1 - piezo speaker *Pals: "TIMING B" - AMPAL16R4APC (marked on silkscreen "TIMING PAL") @@ -212,15 +216,7 @@ UM95089: Tone Dialer chip *Deviations from silkscreen: 4N37 (marked on silkscreen "4N35") 74F153 (marked on silkscreen "74ALS153") -74HCT259 is socketed, possibly intended that the rom expansion daughterboard will fit in its socket and in place of the 2 roms, if populated - -*Other Devices: -TMS4256-15NL - 262144 x 1 DRAM -PB1 - piezo speaker - -Crystals: -Y1: 15.8976Mhz, main clock? -Y2: 3.579545Mhz, used by the DTMF generator chip UM95089 (connects to pins 7 and 8 of it) +74HCT259 is socketed, possibly intended that the rom expansion daughterboard will have a ribbon cable fit in its socket ToDo: @@ -275,9 +271,9 @@ ToDo: * Swyft - Figure out the keyboard (interrupts are involved? or maybe an NMI on a - timer/vblank? It iss possible this uses the same DUART+IP2 'keyboard read - int' stuff as the cat does) -- get the keyboard scanning actually working + timer/vblank? It iss possible this uses a similar 'keyboard read int' + to what the cat does) +- get the keyboard scanning actually working; the VIAs are going nuts right now. - Beeper (on one of the vias?) - vblank/hblank stuff - Get the 6850 ACIA working for communications @@ -1548,7 +1544,7 @@ ROM_START( swyft ) ROM_LOAD( "timing_b.pal16r4.u9.jed", 0x0000, 0xb08, CRC(643e6e83) SHA1(7db167883f9d6cf385ce496d08976dc16fc3e2c3)) ROM_LOAD( "decode_e.pal16l8.u20.jed", 0x1000, 0xb08, CRC(0b1dbd76) SHA1(08c144ad7a7bbdd53eefd271b2f6813f8b3b1594)) ROM_LOAD( "video_2b.pal16r4.u25.jed", 0x2000, 0xb08, CRC(caf91148) SHA1(3f8ddcb512a1c05395c74ad9a6ba7b87027ce4ec)) - ROM_LOAD( "disk_3.5c.pal16r4.u26.jed", 0x3000, 0xb08, CRC(fd994d02) SHA1(f910ab16587dd248d63017da1e5b37855e4c1a0c)) + ROM_LOAD( "disk_3.5c.pal16r4.u28.jed", 0x3000, 0xb08, CRC(fd994d02) SHA1(f910ab16587dd248d63017da1e5b37855e4c1a0c)) ROM_END ROM_START( cat )