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(MESS) cat.c: more swyft comment updates, fixed the board location of one of the pals. [Lord Nightmare]

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Jonathan Gevaryahu 2013-10-08 20:29:33 +00:00
parent 6060e514a7
commit c5d9b7701e
1 changed files with 33 additions and 37 deletions
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70
src/mess/drivers/cat.c
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@ -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 )