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Title: EII Rev board 1.0 "Can´t communicate with Apple Mac SD" Post by: xmota on May 15, 2009, 01:48:38 AM EII Nr.1 (fully working machine)
- Logic Board Rev 1.0 (scanner 3.1, main EPROM 2.1. OS 3.1, 5,25 and 3,5 floppy drives), - no piggy boards inside - bought second hand, never worked with Apple - I have 2 Macs (SE 4MbRAM, SE1/40 1 Mb RAM), neither of them communicate with this EII (tried both ports modem, printer) - Apple has activated Apple Talk - Both Macs tested in EII panel mode (the answer is still the same "I can not communicate with EII, check the cable and current preset has MIDI on") - Cable is bought from a guy from Emulator forum at yahoo, cable tested, there is no problem - MIDI is on - all adjustments as described in the SD troubleshooting guide for boards rev 1.0 done (with no results) - I tried to switch the EII "Under control of Macintosh" manually in the Catalogue menu, still no result Title: Re: EII Rev board 1.0 "Can´t communicate with Apple Mac SD" Post by: dr.c on May 15, 2009, 11:26:41 AM Already answered as well. Try with a lower vesion software, this "rings a bell" to me...
I may be wrong, but... Please, give me the name of the connector : CN... Title: Re: EII Rev board 1.0 "Can´t communicate with Apple Mac SD" Post by: xmota on May 15, 2009, 01:47:35 PM lower OS version?
Title: Re: EII Rev board 1.0 "Can´t communicate with Apple Mac SD" Post by: dr.c on May 16, 2009, 12:37:47 PM Try with I don't know wich version, I forgot, its 25 years ago !!!! ;D
Wich OS do you use, tight now ? Title: Re: EII Rev board 1.0 "Can´t communicate with Apple Mac SD" Post by: xmota on May 16, 2009, 02:11:01 PM Good news :)
The Emulator has been probably "downgraded" by the previous user to RS232. Do not ask me why ;) - R48 was cut and removed (now there is back 10 kOhm resistor) - IC132 pins 8,9 cut 10 lifted (now there is a new IS132) It worked like RS232. Now it is again RS422. Now it works with SD, but the communication is rather instable. It works every three attempts. (with OS 3.1) There is still the adjustment for OS lower than 2.3 ("If you do not have AT LEAST VERSION 2.3 of Emulator II OS software, then the following mod must be performed: Lift pin 22 of IC107 and solder one end of a 1Kohm 1/4watt 5% resistor to it. Solder the other end of the resistor to +5 volts DC anywhere nearby.") May this cause the communication instability? Title: Re: EII Rev board 1.0 "Can´t communicate with Apple Mac SD" Post by: dr.c on May 16, 2009, 04:17:04 PM F... forum... took me half hour to answer, and then, everything went away. >:( >:(
Very GOOD job ! CONGRATULATIONS ! Happy for you ! Instability : a) - How long is the cable ? b) - Is it referenced to the OV but NOT to the ground ? (This is how it should be) c) - Is it a professional data cable (for computer, for example) ? Don't use transformed MIDI cable, neither telephone, or dildo power supply cable, use twisted pair shielded cable ! d) - Are the connectors of excellent quality, NASA kinda ? Title: Re: EII Rev board 1.0 "Can´t communicate with Apple Mac SD" Post by: xmota on May 17, 2009, 01:01:36 AM ;) sorry, my friend in the service spent six hours to make it work. He does not have a schematics for the Rev 1.0 so he had to use the scheme for the Rev 0.1 RS422 piggiboard. Nice ;)
a) cable is 2 meters b) I have to ask my friend c) yes it is professional cable d) well, they are normal computer connectors Title: Re: EII Rev board 1.0 "Can´t communicate with Apple Mac SD" Post by: dr.c on May 17, 2009, 02:18:45 AM Question B : it is very tempting to solder the OV of the twisted pair as well to the case of the connector.
If this has been done, take this connection away. Title: Re: EII Rev board 1.0 "Can´t communicate with Apple Mac SD" Post by: xmota on May 18, 2009, 01:00:40 AM No it is not soldered to the connector, anyway the data cable was probably too close to the power cable of my Yamaha CS50 on the lower keyboard stand. I put the cable away from all power cables and monitor cable, including those on Mac and it seems like there is not a problem anymore
Thanks Dr.C for help Title: Re: EII Rev board 1.0 "Can´t communicate with Apple Mac SD" Post by: dr.c on May 18, 2009, 03:07:03 AM Geeeee.... sensitive at that point ?
Well, happy it works ! Gotta a second one to fix now ? Title: Re: EII Rev board 1.0 "Can´t communicate with Apple Mac SD" Post by: xmota on May 18, 2009, 11:20:42 AM Well I would like to fix the second one now, but it is not too urgent now ;)
Title: Re: EII Rev board 1.0 "Can´t communicate with Apple Mac SD" Post by: dr.c on May 18, 2009, 12:49:40 PM Come on !!!! ;D
Title: Re: EII Rev board 1.0 "Can´t communicate with Apple Mac SD" Post by: xmota on May 18, 2009, 01:29:42 PM OK OK OK ;D
I will sleep better when both EIIs are working ;) ... and I can sell one to have some money for rack EIII ... Title: Re: EII Rev board 1.0 "Can´t communicate with Apple Mac SD" Post by: dr.c on May 18, 2009, 04:11:37 PM "and I can sell one to have some money for rack EIII ..."
(and get on my back because it won't be working...) :D Title: Re: EII Rev board 1.0 "Can´t communicate with Apple Mac SD" Post by: xmota on May 19, 2009, 02:45:43 AM hope not ;) If it finally works, I would test it carefully before selling.
Title: Re: EII Rev board 1.0 "Can´t communicate with Apple Mac SD" Post by: dr.c on May 21, 2009, 01:34:52 PM We say in France (with humor) :
"En essayant continuellement, on finit par réussir. Donc : plus ça rate, plus on a de chances que ça marche" "By continuously trying, we end up to succed. Therefore, the more it fails, the more chance we have its going to work" :D :D :D |