[2019-12-08 19:54:41 CET] * rune joined [2019-12-08 20:01:40 CET] * heinz joined [2019-12-08 20:01:57 CET] Hi Dave. [2019-12-08 20:02:01 CET] hello Heinz [2019-12-08 20:02:15 CET] How are you? [2019-12-08 20:02:15 CET] How is your memory card going? [2019-12-08 20:02:29 CET] Im good thanks, Waiting for sockets and some probes [2019-12-08 20:03:06 CET] The memory card doesn't work if I start the ACE. But if I deactivate the CS-pin at the RAM, then it starts. [2019-12-08 20:03:17 CET] After I can use the whole 48k RAM. [2019-12-08 20:03:44 CET] Good, its moving forward. Would it be better to look at a standard ACE memory card? [2019-12-08 20:03:59 CET] Rather than the Combo memory and AY card [2019-12-08 20:04:27 CET] There are two caps at Pin7 and Pin9 of the LS153. They are a bvit suspect. [2019-12-08 20:04:35 CET] a bit suspect for me [2019-12-08 20:04:57 CET] Did I send the schema for that? [2019-12-08 20:05:27 CET] I don't need the AY together with the ACE. But a Vdrive and an external ROM would be nice. [2019-12-08 20:06:00 CET] Yes, vdrive especially. But the memory card is needed for that option [2019-12-08 20:06:14 CET] Do you have the scheme of the standard mem card? [2019-12-08 20:06:32 CET] I should have. 2 minutes [2019-12-08 20:06:46 CET] Don't look for now. [2019-12-08 20:06:54 CET] You can send it tomorrow. [2019-12-08 20:07:12 CET] Did you make steps forward with your ACE?i [2019-12-08 20:07:23 CET] OK, can only find standard memory addons just now [2019-12-08 20:07:32 CET] I did and didnt. [2019-12-08 20:07:48 CET] What works? [2019-12-08 20:07:50 CET] My big problem is that the ROM stopped responding to the keyboard. [2019-12-08 20:08:12 CET] I found 2 6116 ram in the shed today. Gives a different pattern [2019-12-08 20:08:15 CET] But... [2019-12-08 20:08:23 CET] tHAT IS IT STARTS NOW WITH A NORMAL SCREENß [2019-12-08 20:08:30 CET] screen? [2019-12-08 20:08:36 CET] I get the same pattern with or without Z3-4 [2019-12-08 20:08:45 CET] No still a patterned screen [2019-12-08 20:09:04 CET] So maybe the problem is Z3-4? [2019-12-08 20:10:16 CET] Pin19=A10 is grounded? [2019-12-08 20:10:24 CET] Yes [2019-12-08 20:10:53 CET] As far as I can tell all cuts are correct, all wires correct [2019-12-08 20:11:05 CET] But I have been testing Z5-6 and 7-8 [2019-12-08 20:11:22 CET] And CS is connected with Pin12Z29? [2019-12-08 20:11:28 CET] Today, I was getting the same pattern with Z3-4 out. [2019-12-08 20:11:51 CET] I think so. [2019-12-08 20:11:55 CET] Does it react for the ENTER key? [2019-12-08 20:12:08 CET] No, nothing when any key is pressed [2019-12-08 20:12:34 CET] But it was some days ago, or not? [2019-12-08 20:13:09 CET] Yes, then I did the cuts you sent. I think maybe a track around cut 2 killed it [2019-12-08 20:14:08 CET] I thought Id get the good probes yesterday, but they dont come until tomorrow [2019-12-08 20:15:36 CET] Here is a project for you. A Math's Co-processor for the Jupiter ACE Professor J.V. Noble - (Institute of Nuclear and Particle Physics, University of Virginia) [2019-12-08 20:15:55 CET] There are some tracks around cut 2. You should check them for connection. May be you have cut a wrong one? [2019-12-08 20:16:09 CET] and a link to the 96K board. https://jupiter-ace.co.uk/hardware_96kram_pack.html [2019-12-08 20:16:44 CET] Yes, I will but time is short just now. Im on holiday from next thursday until 6th Juanuary [2019-12-08 20:17:01 CET] pin6 and pin7 are still connected as they should? [2019-12-08 20:17:36 CET] I mean each of them with the right tracks. [2019-12-08 20:18:23 CET] Did you make the cut 2 at exactly the same position as I did? [2019-12-08 20:18:26 CET] Id need to check. I dont have the board with me at the moment [2019-12-08 20:18:57 CET] I recommend to check the connections of the Z3-4. [2019-12-08 20:18:58 CET] But before cutting the keys did react [2019-12-08 20:19:19 CET] I will, I think I spent all the time on the other RAM [2019-12-08 20:19:55 CET] I noticed a diode on the original board up near the 3.275 MHz transistor [2019-12-08 20:20:26 CET] Its describer as Used in character RAM decoding [2019-12-08 20:20:33 CET] Its not on that board? [2019-12-08 20:20:41 CET] Might be you have cut accidentally a seccond one or the wrong one. There is also a feed through at pin2. To cut right side of this. [2019-12-08 20:21:18 CET] Im going to start with a fresh board with the cuts checked before adding any components [2019-12-08 20:22:44 CET] Do you mean the diode on my board? [2019-12-08 20:22:51 CET] The 8xdiodes at the botrtom left. From position 2 to position 6 [2019-12-08 20:23:03 CET] All have 2.7 volts the others nothing [2019-12-08 20:23:23 CET] No, there is a diode on the real ACE board. [2019-12-08 20:23:29 CET] But not in our design [2019-12-08 20:23:45 CET] On my design this diode is for /ROMCS. [2019-12-08 20:24:04 CET] I will measure the voltage at the diodes just now. [2019-12-08 20:24:06 CET] Wait [2019-12-08 20:24:19 CET] I think we are talking about different things with the top diode [2019-12-08 20:26:59 CET] * Guest841 joined [2019-12-08 20:26:59 CET] * heinz quit (CGI:IRC (EOF)) [2019-12-08 20:27:11 CET] I had a prtoblem with the web. [2019-12-08 20:27:16 CET] Im back. [2019-12-08 20:27:26 CET] Good to see you again ;: [2019-12-08 20:27:31 CET] All of my diodes have about 2.5V at anode. [2019-12-08 20:27:36 CET] (no ring). [2019-12-08 20:27:57 CET] OK, so it looks like I have a problem with 1, 6, 7, 8 [2019-12-08 20:28:00 CET] Hello Dave? [2019-12-08 20:28:03 CET] Hello [2019-12-08 20:28:13 CET] Are you receiving me? [2019-12-08 20:28:20 CET] Is there anyone in there? [2019-12-08 20:28:28 CET] Yes. [2019-12-08 20:28:34 CET] Just knock if you can hear me [2019-12-08 20:28:43 CET] The connection works again. [2019-12-08 20:28:51 CET] But with another name now. [2019-12-08 20:28:53 CET] Good [2019-12-08 20:29:01 CET] I know your IP [2019-12-08 20:29:07 CET] no need for names [2019-12-08 20:29:07 CET] Erik made some efforts with the Vdrive. [2019-12-08 20:29:22 CET] Any progress? [2019-12-08 20:29:35 CET] And he had sent me the ROM. [2019-12-08 20:29:44 CET] I can initializes. [2019-12-08 20:29:47 CET] Look to that new RAM pack link. One memory chip and 1 logic chip [2019-12-08 20:30:01 CET] But no directory readfing upto now. [2019-12-08 20:30:15 CET] Small steps, gets there [2019-12-08 20:30:45 CET] I'll be back, cat is scratching at the door [2019-12-08 20:30:56 CET] Did you tune your probes to get a better clock picture? [2019-12-08 20:31:28 CET] I tried, but I couldnt get rid of the funny shape completely [2019-12-08 20:31:47 CET] SO I bout some new ones. Thay are coming [2019-12-08 20:31:51 CET] bought [2019-12-08 20:32:17 CET] My resistors and sockets are on a night out in Dorsten [2019-12-08 20:32:32 CET] I had a look to the scheme. [2019-12-08 20:32:59 CET] The anode side of the diodes are completely not connected if no key is pressed. [2019-12-08 20:33:30 CET] is that bad? [2019-12-08 20:33:36 CET] So the voltage of 2.5V could also be a measurement error. [2019-12-08 20:34:05 CET] You should use a scope for correct picture at the diodes. [2019-12-08 20:34:19 CET] I couldnt see any change in volts if a key was pressed or not [2019-12-08 20:34:44 CET] The anode side is OPEN. No connection to GND or +5V. [2019-12-08 20:34:46 CET] OK, Im getting the fine hook connecto with then too [2019-12-08 20:35:07 CET] So I can start checking tomorrow [2019-12-08 20:35:23 CET] But I'll look to Z3-4 connections tonight [2019-12-08 20:36:28 CET] Yes, this would be important. [2019-12-08 20:36:45 CET] Have you written any programs on ACE? How do you feel it compares to H4th?~ [2019-12-08 20:36:54 CET] Or the Speccy Forth [2019-12-08 20:37:04 CET] Faster? Slower? [2019-12-08 20:37:11 CET] I wrote some programs connecting with the use of the Vdrive. [2019-12-08 20:37:23 CET] I like more the H4TH Forth. [2019-12-08 20:37:40 CET] But ACE forth has the advantage of pseudographic [2019-12-08 20:37:52 CET] and of floating point arithmetic. [2019-12-08 20:37:55 CET] The only problem with H4th is lack of graphics and screen printing [2019-12-08 20:38:24 CET] There is no possibility at all to print with the ACE. [2019-12-08 20:38:33 CET] Yes, I agree with that. There are also lots of projects even though it only sold about 8000 units [2019-12-08 20:38:37 CET] There is no /ROMCS. [2019-12-08 20:38:59 CET] You are talking printer? I mean to screen [2019-12-08 20:39:05 CET] Let us stop for today. [2019-12-08 20:39:15 CET] OK, I'll go test. Talk to you soon [2019-12-08 20:39:24 CET] Bye [2019-12-08 20:39:24 CET] bye [2019-12-08 20:39:27 CET] * Guest841 quit (CGI:IRC 0.5.12) [2019-12-08 20:39:28 CET] * rune quit (Leaving)