News Ultimarc Emu Loader Programming MAME Artwork progetto-SNAPS MAMEUI HBMAME EmuChat Hardware The Loony Bin MAME Artwork X

Entrance | Main Index | Search | New user | Login | Who's Online | FAQ | Rules

MAMEWorld >> Programming Index   Flat

SailorSat MAME Fan Reged: 03/04/07 Posts: 169 Loc: Germany Send PM Re: Help emulating the model1 comm board 01/18/13 09:47 PM Reply > MAME has a very complete, cycle-accurate 8237A DMA device under the AMD part number: > am9517a.c/.h. > > There's also an older i8237 emulation that isn't as good; it couldn't support e.g. > SoundBlaster and other ISA DMA in the MESS PC driver so am9517a.c was born. But some > drivers haven't been converted to the better implementation yet. We'll see Some mystery solved: JP2 selects A15 on the EEPROM JP3 selects A16 on the EEPROM JP2 --. = +5V JP2 .-- = GND --. JP3 = GND .-- JP3 = some pin [NOT Q] on IC16 (internal SRAM) --- JP4 selects [NOT G] on the EEPROM JP4 --. = some pin [NOT Q] on IC16 (internal SRAM) JP4 .-- = GND --- JP5 connects RX line to TOSLINK receiver open = TOSLINK disabled close = TOSLINK enabled --- JP6 connects RX line to [R] Pin 2 of IC27 open = DIFFERENTIAL disabled close = DIFFERENTIAL enabled --- CN4 is a DIFFERENTIAL connection Pin 1 = GND Pin 2+2 = TX Line Pair Pin 4 = GND Pin 5+6 = RX Line Pair Pin 7+8 = not connected --- CN5 is connected to the two PC910 ICs Pin 1 = connected to R12 (to +5V) Pin 2 = connected to R13 (to IC32 Pin 6) Pin 3 = GND Pin 4 = not connected Pin 5 = IC33 Pin 3 Pin 6 = IC33 Pin 2 --- JP8 selects CLOCK SOURCE 1-2 = External (Model1 CPU?) 2-3 = Internal (Comm board) As there is no OSC on the Comm board, not very fancy though. But... The CLOCK signal runs through an "POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOP" resulting CLOCK/2 CLOCK/2 then splits up. One line goes to the "other side" of the "POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOP" resulting in CLOCK/4 CLOCK/4 then goes to the DMA CLK (Pin12), DLC CLK (Pin1) and Z80 CLK (Pin 6) The other CLOCK/2 goes to one of the inputs of IC4 (Pin5) and gets inverted (Pin6) and routed to IC21 CLK (Pin2), a 4bit counter --- SW1 connects GND to R16 (connected to [NOT PRE] Pin 4 on IC9) may be some count of reset I do all that stuff even without a Joystick Soft-15kHz, cabMAME, For Amusement Only e.V.

Entire thread Subject Posted by Posted on Help emulating the model1 comm board SailorSat 10/15/12 08:22 PM Re: Help emulating the model1 comm board SailorSat  01/05/13 06:26 AM Re: Help emulating the model1 comm board Embryoice  12/30/12 06:41 PM Re: Help emulating the model1 comm board jedpossum  01/04/13 03:03 PM Re: Help emulating the model1 comm board Embryoice  01/05/13 01:42 AM Re: Help emulating the model1 comm board jedpossum  01/05/13 01:57 PM Re: Help emulating the model1 comm board SailorSat  01/08/13 07:56 PM Re: Help emulating the model1 comm board nuexzz  01/09/13 06:42 AM Re: Help emulating the model1 comm board Embryoice  01/09/13 02:53 PM Re: Help emulating the model1 comm board SailorSat  01/16/13 10:03 AM Re: Help emulating the model1 comm board RetroRepair  01/16/13 11:21 AM Re: Help emulating the model1 comm board nuexzz  01/16/13 01:31 PM Re: Help emulating the model1 comm board RetroRepair  01/16/13 04:26 PM Re: Help emulating the model1 comm board nuexzz  01/16/13 07:15 PM Re: Help emulating the model1 comm board SailorSat  01/16/13 03:15 PM Re: Help emulating the model1 comm board RetroRepair  01/16/13 04:34 PM Re: Help emulating the model1 comm board SailorSat  01/16/13 05:04 PM Re: Help emulating the model1 comm board RetroRepair  01/16/13 05:28 PM Re: Help emulating the model1 comm board SailorSat  01/17/13 10:17 AM Re: Help emulating the model1 comm board SailorSat  01/17/13 07:38 PM Re: Help emulating the model1 comm board SailorSat  01/17/13 08:53 PM Re: Help emulating the model1 comm board SailorSat  01/17/13 09:13 PM Re: Help emulating the model1 comm board Stiletto  01/18/13 12:46 AM Re: Help emulating the model1 comm board SailorSat  01/18/13 01:15 AM Re: Help emulating the model1 comm board R. Belmont  01/18/13 05:03 PM Re: Help emulating the model1 comm board SailorSat  01/18/13 09:47 PM Re: Help emulating the model1 comm board Junoman  01/18/13 10:12 PM Re: Help emulating the model1 comm board SailorSat  01/19/13 04:15 AM Re: Help emulating the model1 comm board SailorSat  01/19/13 10:05 PM Re: Help emulating the model1 comm board SailorSat  01/20/13 07:20 PM Re: Help emulating the model1 comm board RetroRepair  01/21/13 10:52 PM Re: Help emulating the model1 comm board SailorSat  01/22/13 07:08 PM Re: Help emulating the model1 comm board Naoki  01/24/13 06:34 PM Re: Help emulating the model1 comm board SailorSat  01/31/13 03:29 AM Re: Help emulating the model1 comm board SailorSat  02/02/13 05:15 AM Re: Help emulating the model1 comm board RetroRepair  02/03/13 07:52 AM Re: Help emulating the model1 comm board SailorSat  02/03/13 08:05 AM Re: Help emulating the model1 comm board RetroRepair  02/03/13 08:23 AM Re: Help emulating the model1 comm board SailorSat  02/03/13 08:24 AM Re: Help emulating the model1 comm board RetroRepair  02/03/13 09:47 AM Re: Help emulating the model1 comm board RetroRepair  02/03/13 10:00 AM Re: Help emulating the model1 comm board R. Belmont  02/05/13 02:22 PM Re: Help emulating the model1 comm board RetroRepair  02/05/13 10:00 PM Re: Help emulating the model1 comm board R. Belmont  02/06/13 11:53 AM Re: Help emulating the model1 comm board dgame  02/06/13 05:54 PM Re: Help emulating the model1 comm board Embryoice  02/06/13 03:48 AM Re: Help emulating the model1 comm board RetroRepair  02/03/13 10:58 AM Re: Help emulating the model1 comm board vandale  02/03/13 08:58 PM Re: Help emulating the model1 comm board SailorSat  02/04/13 01:18 AM Re: Help emulating the model1 comm board R. Belmont  02/07/13 12:54 AM Re: Help emulating the model1 comm board SailorSat  02/07/13 03:17 AM Re: Help emulating the model1 comm board R. Belmont  02/21/13 05:11 PM Re: Help emulating the model1 comm board SailorSat  02/22/13 02:59 AM Re: Help emulating the model1 comm board coltonmameworld  12/30/14 07:16 PM Re: Help emulating the model1 comm board fortuna_chan  02/25/13 06:40 PM Re: Help emulating the model1 comm board R. Belmont  02/28/13 12:03 PM Re: Help emulating the model1 comm board FMecha  03/04/13 01:36 PM Re: Help emulating the model1 comm board SailorSat  03/05/13 03:39 AM Re: Help emulating the model1 comm board R. Belmont  03/06/13 12:14 PM Re: Help emulating the model1 comm board R. Belmont  03/10/13 03:29 PM Re: Help emulating the model1 comm board SailorSat  03/18/13 04:36 AM Re: Help emulating the model1 comm board Boomslangnz  03/30/13 11:04 PM Re: Help emulating the model1 comm board Embryoice  04/01/13 01:14 PM Re: Help emulating the model1 comm board R. Belmont  04/02/13 09:13 PM Re: Help emulating the model1 comm board MichaelMichael54321  04/07/13 05:37 PM Re: Help emulating the model1 comm board SailorSat  07/10/13 11:50 AM Re: Help emulating the model1 comm board Retro27  07/22/13 07:22 AM Re: Help emulating the model1 comm board SailorSat  08/02/13 09:17 AM Re: Help emulating the model1 comm board SailorSat  10/13/14 07:36 PM Re: Help emulating the model1 comm board SailorSat  10/14/14 02:11 PM Re: Help emulating the model1 comm board R. Belmont  10/16/14 04:32 PM Re: Help emulating the model1 comm board SailorSat  10/16/14 07:31 PM Re: Help emulating the model1 comm board Naoki  08/02/13 11:08 AM Re: Help emulating the model1 comm board Naoki  07/10/13 01:36 PM Re: Help emulating the model1 comm board nuexzz  07/10/13 05:46 PM Re: Help emulating the model1 comm board R. Belmont  03/20/13 11:48 AM Re: Help emulating the model1 comm board Embryoice  03/18/13 10:23 AM Re: Help emulating the model1 comm board Naoki  03/04/13 03:33 PM Re: Help emulating the model1 comm board R. Belmont  03/04/13 03:57 PM Re: Help emulating the model1 comm board nuexzz  02/02/13 01:59 PM Re: Help emulating the model1 comm board Stiletto  01/22/13 08:09 PM Re: Help emulating the model1 comm board SailorSat  01/18/13 09:47 AM Re: Help emulating the model1 comm board Stiletto  01/18/13 10:27 AM Re: Help emulating the model1 comm board RetroRepair  01/17/13 10:04 PM Re: Help emulating the model1 comm board SailorSat  01/17/13 10:13 PM Re: Help emulating the model1 comm board Embryoice  01/17/13 10:20 PM Re: Help emulating the model1 comm board Embryoice  01/17/13 10:10 PM Re: Help emulating the model1 comm board RetroRepair  01/17/13 11:05 PM Re: Help emulating the model1 comm board Stiletto  12/30/12 06:56 PM Re: Help emulating the model1 comm board RetroRepair  12/24/12 06:20 AM Re: Help emulating the model1 comm board SailorSat  12/24/12 07:17 AM Re: Help emulating the model1 comm board RetroRepair  12/24/12 08:24 AM Re: Help emulating the model1 comm board SailorSat  12/30/12 07:26 AM Re: Help emulating the model1 comm board SailorSat  12/30/12 01:24 PM Re: Help emulating the model1 comm board SailorSat  12/30/12 04:45 PM Re: Help emulating the model1 comm board Retro27  12/30/12 07:42 PM Re: Help emulating the model1 comm board SailorSat  12/30/12 09:48 PM Re: Help emulating the model1 comm board SailorSat  12/30/12 10:04 PM Re: emulating the model1 comm board gregf  01/02/13 04:25 AM Re: Help emulating the model1 comm board SailorSat  12/31/12 02:57 AM Re: Help emulating the model1 comm board bdam  01/02/13 08:39 AM Re: Help emulating the model1 comm board R. Belmont  01/02/13 06:28 PM Re: Help emulating the model1 comm board Stiletto  01/04/13 02:46 PM Re: Help emulating the model1 comm board R. Belmont  01/04/13 03:34 PM Re: Help emulating the model1 comm board SailorSat  01/04/13 06:42 PM Re: Help emulating the model1 comm board Reznor007  01/04/13 08:33 PM Re: Help emulating the model1 comm board bdam  01/02/13 08:29 PM Re: Help emulating the model1 comm board R. Belmont  01/02/13 09:13 PM Re: Help emulating the model1 comm board SailorSat  01/02/13 12:55 PM Re: Help emulating the model1 comm board nuexzz  01/04/13 03:30 AM Re: Help emulating the model1 comm board Embryoice  01/02/13 03:04 PM Re: Help emulating the model1 comm board RetroRepair  01/02/13 06:30 PM Re: Help emulating the model1 comm board SailorSat  01/02/13 07:49 PM Re: Help emulating the model1 comm board R. Belmont  01/02/13 09:28 PM Re: Help emulating the model1 comm board drewcifer  01/03/13 01:13 PM Re: Help emulating the model1 comm board SailorSat  01/03/13 04:05 PM Re: Help emulating the model1 comm board Stiletto  01/04/13 02:50 PM Re: Help emulating the model1 comm board Ramirez  01/04/13 06:15 AM Re: Help emulating the model1 comm board Dullaron  01/03/13 08:33 PM Re: Help emulating the model1 comm board R. Belmont  01/03/13 08:10 PM Re: Help emulating the model1 comm board Naoki  01/03/13 06:21 PM Re: Help emulating the model1 comm board Embryoice  12/30/12 06:01 PM Re: Help emulating the model1 comm board Embryoice  02/02/13 02:19 PM Re: Help emulating the model1 comm board SailorSat  02/02/13 07:09 PM Re: Help emulating the model1 comm board vandale  02/02/13 09:27 PM Re: Help emulating the model1 comm board SailorSat  02/02/13 09:35 PM Re: Help emulating the model1 comm board vandale  02/02/13 10:34 PM Re: Help emulating the model1 comm board vandale  02/02/13 11:42 PM Re: Help emulating the model1 comm board vandale  02/03/13 02:27 AM Re: Help emulating the model1 comm board SailorSat  02/03/13 07:26 AM Re: Help emulating the model1 comm board Stiletto  12/30/12 06:22 PM Re: Help emulating the model1 comm board Embryoice  12/30/12 06:33 PM Re: Help emulating the model1 comm board Embryoice  12/30/12 06:10 PM Re: Help emulating the model1 comm board SailorSat  12/30/12 06:16 PM Re: Help emulating the model1 comm board R. Belmont  11/04/12 11:55 PM Re: Help emulating the model1 comm board Lord Nightmare  10/21/12 01:50 PM Re: Help emulating the model1 comm board FMecha  10/18/12 04:11 AM

Extra information Permissions Moderator:  Pi  0 registered and 9 anonymous users are browsing this forum. You cannot start new topics You cannot reply to topics HTML is enabled UBBCode is enabled Thread views: 51590

Browser Test | Delete Cookies atom-guru atom-guru atom-guru atom-guru UBB.threads™ 6.3.2