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[2019-03-10 19:58:27 CET] <rune> heh heinz
[2019-03-10 19:58:37 CET] <heinz> hello dave
[2019-03-10 19:58:51 CET] <heinz> nice program
[2019-03-10 19:58:53 CET] <rune> Thats an interesting example
[2019-03-10 19:59:08 CET] <rune> yes, Im trying to use the example to make things neater
[2019-03-10 19:59:10 CET] <heinz> depth is completelynew.
[2019-03-10 19:59:37 CET] <rune> There were two variations of forth words either depth or .s
[2019-03-10 19:59:53 CET] <rune> cant remember which went with fig forth and forth-83
[2019-03-10 19:59:55 CET] <heinz> really?
[2019-03-10 20:00:21 CET] <rune> Yes, must have been left out of h4th for space reasons
[2019-03-10 20:00:45 CET] <heinz> yes, no depth in h4th.
[2019-03-10 20:01:06 CET] <rune> How difficult would it be to use 16k roms on ZX NU
[2019-03-10 20:01:42 CET] <heinz> there is no problem to use them on zx81.
[2019-03-10 20:02:00 CET] <heinz> but for nu it seems to be impossible.
[2019-03-10 20:02:12 CET] <heinz> i will ask oliver.
[2019-03-10 20:02:28 CET] <rune> I need to get the ROM adapter fin9ished then
[2019-03-10 20:02:33 CET] <heinz> i have two zx81 with 16k rom.
[2019-03-10 20:02:54 CET] <rune> It would be nice to have all the extra words for h4th in rom
[2019-03-10 20:03:06 CET] <heinz> bokje had shown me how to use the extended riom.
[2019-03-10 20:03:17 CET] <rune> Do you need to modify the pcb
[2019-03-10 20:03:46 CET] <heinz> no changes with the pcb.
[2019-03-10 20:04:03 CET] <heinz> but the vdrive is not included anymore.
[2019-03-10 20:04:35 CET] <rune> We need an SD card drive of some sort, vdrive or ZXpand
[2019-03-10 20:04:46 CET] <rune> or a hard disk drive
[2019-03-10 20:05:14 CET] <heinz> paul has promised to produce an interface for the zx81 with external rom and vdrive.
[2019-03-10 20:05:26 CET] <heinz> this could be used for h4th.
[2019-03-10 20:05:50 CET] <rune> That sounds exciting, put my name down for one price doesnt matter
[2019-03-10 20:05:54 CET] <heinz> for the eightyone it is no problem.
[2019-03-10 20:06:08 CET] <rune> Does the address just continue?
[2019-03-10 20:06:15 CET] <heinz> bokje was focused to eo.
[2019-03-10 20:06:26 CET] <rune> eo=eighty one
[2019-03-10 20:07:28 CET] <heinz> addresses: only minor changes in the 8k partition, and then the addresses continue
[2019-03-10 20:08:08 CET] <heinz> pauls card is very similar to the apu card.
[2019-03-10 20:08:12 CET] <rune> sounds good. I think one of my zeddies has a socketed rom
[2019-03-10 20:08:47 CET] <rune> will it take eprom directly with no modified socket
[2019-03-10 20:09:24 CET] <heinz> no you have to modify.
[2019-03-10 20:09:42 CET] <heinz> but it is easy.
[2019-03-10 20:09:45 CET] <rune> on pauls card? so he uses 24 pin
[2019-03-10 20:10:09 CET] <rune> I have a 24 and 28 pin dip sockets at work ready for wiring
[2019-03-10 20:10:48 CET] <heinz> do you want to put an eprom in your zx81?
[2019-03-10 20:11:21 CET] <rune> yes, will I send a pcb over?
[2019-03-10 20:11:45 CET] <rune> Im still too clumsy desoldering 
[2019-03-10 20:12:07 CET] <rune> Perfect on scrap test PCB, but not the PCB I want to keep
[2019-03-10 20:13:35 CET] <rune> You said Bokje is working on eo. Whats eo, the emulator?
[2019-03-10 20:13:41 CET] <heinz> i will send you some pictures how to change the board.
[2019-03-10 20:13:53 CET] <rune> OK
[2019-03-10 20:13:56 CET] <rune> cpl
[2019-03-10 20:14:07 CET] <heinz> eo=eighty one as you wrote.
[2019-03-10 20:14:23 CET] <rune> Is he getting the VDRIVE added?
[2019-03-10 20:14:30 CET] <rune> Or ZX NU?
[2019-03-10 20:15:05 CET] <heinz> i dont remember.
[2019-03-10 20:15:31 CET] <heinz> please, ask him.
[2019-03-10 20:16:01 CET] <rune> OK, 
[2019-03-10 20:17:11 CET] <heinz> if you want to use a 16k eprom you have to cut three klines
[2019-03-10 20:17:16 CET] <heinz> lines
[2019-03-10 20:17:36 CET] <heinz> and to use three new lines.
[2019-03-10 20:17:41 CET] <rune> That sounds easy, what ROMs are available?
[2019-03-10 20:17:57 CET] <heinz> it is very simple.
[2019-03-10 20:18:04 CET] <heinz> 16k
[2019-03-10 20:18:26 CET] <heinz> 27128 or 27256
[2019-03-10 20:18:54 CET] <rune> I have loads fo those, I even found some eeproms today
[2019-03-10 20:18:56 CET] <heinz> for 27256 the upper 8k bank
[2019-03-10 20:19:14 CET] <heinz> sorry, upper 16k bank
[2019-03-10 20:20:03 CET] <rune> Can you switch between them?
[2019-03-10 20:20:15 CET] <heinz> no.
[2019-03-10 20:20:17 CET] <rune> upper/lower 16k banks
[2019-03-10 20:20:22 CET] <rune> OK, 
[2019-03-10 20:21:11 CET] <heinz> pin27 and pin 28 are connected on the board under the socket.
[2019-03-10 20:21:34 CET] <heinz> you cant cut this joint without removing the socket.
[2019-03-10 20:22:05 CET] <rune> But if you dont have a socket. Most of my Zeddies are solder to the board jobs
[2019-03-10 20:22:13 CET] <heinz> whatissue do you have?
[2019-03-10 20:22:20 CET] <rune> Mostly issue 1
[2019-03-10 20:22:30 CET] <rune> I think there may be a 3 in there
[2019-03-10 20:23:53 CET] <rune> |
[2019-03-10 20:24:07 CET] <heinz> if the rom is soldered, you first have to cut it ( cut the pins with a circular saw
[2019-03-10 20:24:21 CET] <heinz> ) and desolder pin by pin then
[2019-03-10 20:24:23 CET] <heinz> .
[2019-03-10 20:24:32 CET] <rune> I dont have one of those, would a chainsaw work as well?
[2019-03-10 20:24:59 CET] <rune> Then the 24-28 rom carrier
[2019-03-10 20:25:04 CET] <heinz> if the teeth are small enouh ;-)
[2019-03-10 20:25:10 CET] <heinz> enough
[2019-03-10 20:25:29 CET] <rune> Yes, off course that makes sense
[2019-03-10 20:25:49 CET] <rune> I'll give it a try
[2019-03-10 20:25:52 CET] <heinz> dave, first i will send you some pictures. it makes all clearer.
[2019-03-10 20:26:22 CET] <rune> Thank you, I'll watch for them
[2019-03-10 20:26:41 CET] <heinz> let us stop for today,
[2019-03-10 20:26:48 CET] <heinz> im very busy.
[2019-03-10 20:26:49 CET] <rune> ok, nice talk
[2019-03-10 20:26:57 CET] <rune> no problem, next week
[2019-03-10 20:26:59 CET] <heinz> bye, next week.
[2019-03-10 20:27:00 CET] <rune> bye
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