[2020-01-12 19:51:28 CET] * heinz joined [2020-01-12 20:03:40 CET] Hello, nobody there? [2020-01-12 20:05:06 CET] quit [2020-01-12 20:05:12 CET] * heinz quit (CGI:IRC 0.5.12) [2020-01-12 20:05:55 CET] * heinz joined [2020-01-12 20:07:00 CET] * rune joined [2020-01-12 20:07:06 CET] hello heinz [2020-01-12 20:07:45 CET] are you feeling better tonight. [2020-01-12 20:07:48 CET] Hello Dave, I read your email jhust now, sorry for no reply. [2020-01-12 20:07:54 CET] Sorry I ws late [2020-01-12 20:08:07 CET] No problem [2020-01-12 20:08:21 CET] I have memory card built [2020-01-12 20:08:33 CET] Made a mistake with the resistor footprint [2020-01-12 20:08:35 CET] I am still very hoarse. [2020-01-12 20:08:48 CET] They are to short so resistors need to be in vertically [2020-01-12 20:09:03 CET] Oh dear. Dont shout at me then [2020-01-12 20:09:30 CET] Footprint: Might be I can bend the resistors so that they will fit. Don't like vertically mounted parts. [2020-01-12 20:09:52 CET] Yo would need to bend the wire back a mm or two [2020-01-12 20:10:07 CET] I have seen your contributions in the forum. [2020-01-12 20:10:11 CET] they are 2mm short [2020-01-12 20:10:13 CET] You have been very busy. [2020-01-12 20:10:24 CET] Yes, had most of yesterday and today [2020-01-12 20:10:31 CET] PCB is almost built too [2020-01-12 20:10:39 CET] I ran out of parts [2020-01-12 20:10:42 CET] 2mm is really short, at least 7.5mm are needed. [2020-01-12 20:10:51 CET] Better some more. [2020-01-12 20:10:57 CET] No they are about 5.5mm [2020-01-12 20:11:35 CET] 5.5 could be enough. [2020-01-12 20:11:38 CET] Will try. [2020-01-12 20:12:04 CET] OK, I see last time stamp on tracking is 1 hour earlier. so the parcel may be in Europe [2020-01-12 20:12:12 CET] I recommend you to procced the building in the following way: [2020-01-12 20:12:46 CET] Next the sept down regulator to have power.. [2020-01-12 20:13:01 CET] step [2020-01-12 20:13:36 CET] Then Q1, Q2,...quartz,.---Check the oscillator. [2020-01-12 20:13:46 CET] Then Z9, check CLK. [2020-01-12 20:14:36 CET] Send a photo of the CLK. [2020-01-12 20:14:47 CET] OK [2020-01-12 20:14:56 CET] By the way, is there already a key slot? [2020-01-12 20:15:03 CET] CLK taken at pin 6 of Z80 [2020-01-12 20:15:29 CET] You don't need a socket, just count 6 holes., [2020-01-12 20:15:34 CET] No, you have to cut it. You said last one was a bit wide, but I couldnt make it less wide [2020-01-12 20:16:00 CET] You should make the cut as soon as possible. [2020-01-12 20:16:17 CET] It might be more complicated if all parts are mounted. [2020-01-12 20:16:29 CET] OK, I will use the memory board to make sure its correct [2020-01-12 20:16:37 CET] It will be my first step. [2020-01-12 20:16:52 CET] I have caps, transistors, crystal, dc-dc and a z80 socket to go in. [2020-01-12 20:17:12 CET] Build will be delayed until tues or wed while I wait for parts [2020-01-12 20:17:38 CET] Check ACE on ZX Team forum. [2020-01-12 20:18:04 CET] I have started tow build messages. You can add suggestions there too to hhelp others [2020-01-12 20:18:19 CET] I have seen. [2020-01-12 20:18:33 CET] No comments at the moment. [2020-01-12 20:18:51 CET] By the way, [2020-01-12 20:18:53 CET] No, but its only you that has built anything [2020-01-12 20:19:14 CET] do you have a serial interface for the ZX81? [2020-01-12 20:19:30 CET] This would be needed for the printer. [2020-01-12 20:19:41 CET] Do you mean a printer serial interface? [2020-01-12 20:19:50 CET] No, only the I/O card [2020-01-12 20:19:52 CET] I can print now on the PC screen. [2020-01-12 20:20:06 CET] Which IO-card? [2020-01-12 20:20:33 CET] The original ZX81-IO card? [2020-01-12 20:20:40 CET] The one with the Z80 PIO, you got two boards with leds for me to test it [2020-01-12 20:21:14 CET] Yes, I remember the test boards. [2020-01-12 20:21:43 CET] Concerning serial ports, there are two differeent kinds of connectors. [2020-01-12 20:22:00 CET] First one is RS232 with +-12V signal lines. [2020-01-12 20:22:14 CET] The other one is TTL level, so 0/5V. [2020-01-12 20:22:30 CET] I suppose the printer needs RS232? [2020-01-12 20:22:54 CET] It does, but I think you can change it to something else. Look at the second manual I sent. [2020-01-12 20:23:12 CET] Its done with dip switches, but I didnt pay attention [2020-01-12 20:23:39 CET] I will look. [2020-01-12 20:24:04 CET] With the PIO you could realize a centronics interface. [2020-01-12 20:25:21 CET] Its possible to get different interfaces for the printer. Just unscrew at back and plug the new one in [2020-01-12 20:25:40 CET] You get centronics, serial, usb, ethernet, wifi [2020-01-12 20:25:41 CET] I any case I will send you a serial interface. It is Joachim's version Serial V20. [2020-01-12 20:25:53 CET] V2.0 [2020-01-12 20:26:16 CET] Great thanks, wait until you are sending my PCB back so only one postage charge [2020-01-12 20:26:19 CET] baud rates from 150 to 9600. [2020-01-12 20:26:38 CET] Of course, all things together will be sent. [2020-01-12 20:26:59 CET] I have also a keyboard, brandnew, [2020-01-12 20:27:10 CET] For the...? [2020-01-12 20:27:11 CET] could be used for the Russian board. [2020-01-12 20:27:38 CET] OK, hoiw does it attach? Switched or membrane. Tell more [2020-01-12 20:27:41 CET] You could cut the essential part, screw it onto the russsian board, and ready. [2020-01-12 20:28:02 CET] Membrane, as it is needed for the Russian board. [2020-01-12 20:28:14 CET] Distances are perfefct. [2020-01-12 20:28:18 CET] Sounds good, send photos [2020-01-12 20:28:18 CET] perfect. [2020-01-12 20:28:42 CET] I ordered sockets for the russian memory. 18 pin? [2020-01-12 20:28:52 CET] I bought it by eBay last week, the German army was selling it. Paid just 3€ for one. [2020-01-12 20:29:44 CET] Brilliant, I like bargains. I heard that the small usb boards have the same 8x5 matrix that sinclair uses [2020-01-12 20:29:56 CET] data sheet says 24 pins for the 2732. [2020-01-12 20:30:14 CET] No memory. RAM. 2114? [2020-01-12 20:30:35 CET] But if you have still the small eprom board, [2020-01-12 20:30:56 CET] Yes, I just remembered that. I could have built that today too [2020-01-12 20:31:28 CET] This board would be good for the Russian board. [2020-01-12 20:31:42 CET] Except you have some 2764. [2020-01-12 20:31:53 CET] Yes, that was the reason it was made. [2020-01-12 20:31:59 CET] I mean 2732. [2020-01-12 20:32:21 CET] Yep, I have some of those eproms, it think [2020-01-12 20:32:45 CET] But I will be using a 2764 on the russian board [2020-01-12 20:33:08 CET] Plugged into 1 of the 2532 sockets [2020-01-12 20:34:10 CET] I have counted the legs of my 2114: They have 18. [2020-01-12 20:34:27 CET] Good, they will match my sockets when they come. [2020-01-12 20:34:42 CET] Have you found any programs that will not run on the ACE [2020-01-12 20:34:53 CET] The 2114 is also sitting on some ZX81 boards. [2020-01-12 20:35:17 CET] Two of such ZX81 RAMs are running in my Russian ACE now. [2020-01-12 20:35:35 CET] I think there were some at work but were thrown out [2020-01-12 20:35:55 CET] I'd need 6 [2020-01-12 20:36:10 CET] I will put a sketch of mounting the keyboard/membrane onto the Russian board. [2020-01-12 20:36:26 CET] Yes please [2020-01-12 20:36:42 CET] Have you thought about new video output [2020-01-12 20:36:59 CET] You will need 6 of the 2114, since each is just 4x1Kbit. [2020-01-12 20:37:32 CET] Video output: There are twio possibilities. [2020-01-12 20:37:37 CET] OK, I would get these from a 128K. I wonder if the chips I took out an old 48 board would work [2020-01-12 20:38:03 CET] It was dead thought so the ram is probably gone [2020-01-12 20:38:14 CET] I have a very bright picture now. I have use an additiona transistor on a small board, three resistors and some wires. [2020-01-12 20:38:33 CET] Details please [2020-01-12 20:38:36 CET] Second possibility would be to use 2-3 extra diodes at the right place. [2020-01-12 20:38:56 CET] Oh, picture on my board.... [2020-01-12 20:38:57 CET] This is much easier to improve the present board. [2020-01-12 20:39:23 CET] I used a 10 uF capacitor, but noticed you recommended a 50uF one [2020-01-12 20:39:30 CET] I will insert the diodesd on your board, if the quality of this solution is good. [2020-01-12 20:39:49 CET] 10µF is to less, [2020-01-12 20:40:03 CET] Also McKlaud mentiond that the capacitance needs increased to stop intermitted corrupted characters [2020-01-12 20:40:16 CET] enough for lette3rs, but not for graphics. [2020-01-12 20:40:17 CET] So it could be that cap is the problem? [2020-01-12 20:40:30 CET] No. [2020-01-12 20:40:37 CET] Oh well :( [2020-01-12 20:40:59 CET] I get his rez rubbish and only characters sometimes [2020-01-12 20:41:13 CET] The problem is the wrong ratio between black porch, black and white signal. [2020-01-12 20:41:48 CET] OK, its over to you maestro [2020-01-12 20:41:51 CET] The white in the rubbish is bright? [2020-01-12 20:41:59 CET] yes, very [2020-01-12 20:41:59 CET] Or just hell grew? [2020-01-12 20:42:20 CET] But I think you will not remember. [2020-01-12 20:42:24 CET] But also when I got characters, the white and black were perfect [2020-01-12 20:42:43 CET] No dull, no grey [2020-01-12 20:42:48 CET] OK, in this case there is nothing to be improved. [2020-01-12 20:43:11 CET] Just a black screen, cursor and response to the keyboard [2020-01-12 20:43:21 CET] ;-) [2020-01-12 20:43:43 CET] Let us stop for today, [2020-01-12 20:43:52 CET] I will care about my health. [2020-01-12 20:43:54 CET] OK, [2020-01-12 20:44:02 CET] Yes, ythat is first [2020-01-12 20:44:04 CET] Next Sunday I will not be online. [2020-01-12 20:44:08 CET] OK, [2020-01-12 20:44:23 CET] Surgeon is OK for Liz? [2020-01-12 20:44:39 CET] Yes, he says operation should be in next thrre weeks [2020-01-12 20:44:50 CET] I hope he is correct [2020-01-12 20:44:53 CET] Good luck and good night. [2020-01-12 20:44:53 CET] three [2020-01-12 20:44:58 CET] Thansk, [2020-01-12 20:44:59 CET] Bye [2020-01-12 20:45:03 CET] * heinz quit (CGI:IRC 0.5.12) [2020-01-12 20:45:06 CET] * rune quit (Leaving)