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71
Interface / Re: Creating EXDOS card clone
« Last post by gflorez on 2020.September.13. 10:43:22 »
I have found some tested WD1772 00-02 chips on this UK page.
72
Műanyag alkatrészek gyártása / Re: Általános
« Last post by szipucsu on 2020.September.13. 08:36:20 »
Nem függ össze szorosan a témával, de a másik topikban a Function 1 feliratú gombot nézve az jutott eszembe, hogy ilyen gombokat akár kulcstartóként is lehetne használni. Csak kéne rá valami, amihez a kulcscsomót rögzíteni lehet.
73
Hardware / Re: NOOB recap question :-)
« Last post by John Fante on 2020.September.13. 08:11:37 »
Great! :razz: Thank you very much!
74
Kijelző / Re: EP128 VGA MONITORRA?
« Last post by C5484 on 2020.September.13. 07:50:19 »
Egy nalam hozzabberto (szoujito is vagyok am) ranezet a datasheet-re, es jelezte hogy a chip interlaced adatokat fogad (paros majd paratlan sorokat).

Kerdes: Az enterben az emlitett labakon interlaced-ben jonnek ki a sorok? Mert ha igen akkor van ertelme ranezni erre a chipre. Ha nem akkor ez nemigen hasznalhato dolog lesz...
75
Műanyag alkatrészek gyártása / Re: Általános
« Last post by C5484 on 2020.September.13. 07:43:53 »
Sziasztok!

A labor/muhely atalakitas kisse elhuzodik, melynek fo oka az hogy nincs hely ahova kipakolhatnam a cuccokat, masreszt mindent en csinalok (uj futescsovek vezetese, uj radiator felszerelese, butorok tervezese/epitese, stb.)

Valamint Kinabol varok par alkatreszt amivel a PCO lesz modositva. Azert van jo hir is, megint lehet kapni izocianatot, es a berendelt adagot meg is kaptam a magyar beszallitotol.
Mondjuk van rosz hir is, a gyarto ceg ahonnan a szilikon gumit veszem, ott valoszinu hogy szabadsagon lehet az ertelmes elado holgy, mert valaki (nev nelkul) azt a valaszt kuldte legutobbi rendelesemre, hogy Pesten nyitva a bolt, be lehet menni megvenni... O.o

A sztereo trinokularis mikroszkopomhoz most keszul az allvany, szinezett betonbol ontom, annak is kell par nap mire megkot. (errol be is rakok ide egy kepet :) )

Ahogy mar irtam, lehet hogy sikerul kikiserletezni a 'matt' feluletet amit az Elan tervrajzokon 'eroded surface finish'-nek hivank. De ehhez kell a mikroszkop hogy ki tudjam merni a szemcsemeretet. Valami hasonlot mar sikerult kesziteni szilikon karbiddal, de tul durva feluletet adott, es a karbid egy resze a szilikonban maradt, majd atkerult az ontott anyagra, vidaman csillogva a kesz feluleten. Az uj otletem olyan szemcseket felvinni a masolando feluletre, amiket aztan oldoszerrel el lehet tavolitani a szilikon mintavetel elott. Igy a karbiddal ellentetben nem 'pozitiv' szemcsek hanem 'negativak' lesznek a masolando feluleten, igy a kesz feluleten is.

Idopontot nem irok hogy mikor indul be a labor, mert meg nem tudom, varhatoan meg kb. 1 het.
76
Hardware / Re: NOOB recap question :-)
« Last post by Allf on 2020.September.12. 21:31:14 »

In the attached picture I marked the poles of the electrolyte capacitor.
77
Hardware / NOOB recap question :-)
« Last post by John Fante on 2020.September.12. 19:50:19 »
I am in the proces of recapping my Egyptian EP64 board.

I am out of horisontal 10 ferrit caps so I have to switch to vertical.

However I am a bit unsure if I am putting them in correctly.

In short my questions is if the end with the curve on the Phillips caps on a EP64 are +.

As far as I can see from my research it is but I want to be sure before I test.

The old cap is here. The end with the curve is in the bottom of the picture.

Thank you in advance. Judge have posted a picture of his recapped board but I must confess that I can't really see what end is + on his caps. I am a cap NOOB :)
78
Hardware / Re: SymbiFace3 is near your Enterprise...
« Last post by gflorez on 2020.September.12. 17:50:25 »
Today a new SF3 update(DFU+CPLD) has been released. You can find it on the official SF3 TMTLogic Drive page.

The enhancements of the SF3_EP_20200903.dfu are:

-The new SF3Boot.Rom version from Geco(also on the Drive) has been added inside the DFU. If no INI file is found or any error is detected, the SF3Boot Rom will be injected on the 60h segment.
-The F40 command to swap Audio modes have been expanded to select also the two MIDI modes, and now the SF3Boot.Rom benefits from this on the  new :SF3 AMODE command. Now the SF3 audio mode can be modified with a simple EXOS command.
79
Hardware / Re: Enterprise Deployment Attempt Over FPGA.
« Last post by dangerman on 2020.September.12. 11:19:17 »
Well I just wired the VSYNC interrupts directly to the INT signal of the CPU, but I guess it's not correct. I'm not sure about how interrupts work in general. I have read about Dave's registers, but I am not sure how they work. For example, what is connected to INT1 or INT2?

On the Enterprise, interrupts are connected to the DAVE chip and then DAVE controls the INT signal of the CPU. Interrupts are latched by DAVE so they can get passed to the CPU (eventually) even if they occur when Z80 interrupts are temporarily disabled.

DAVE has 4 sources of interrupts...

1. Variable frequency interrupt - either 50Hz, 1kHz or a variable frequency specified by the tone generator (ie the pitch of sound)
2. An interrupt at 1Hz
3. INT1 - this is connected to the Nick chip interrupt
4. INT2 - I think this is connected to the network port, so you probably don't need to worry about it.

You can find out what interrupts have occurred by reading DAVE register $B4.
You enable/disable the different interrupt sources and clear interrupt latches by writing to DAVE register $B4.
80
Hardware / Re: Enterprise Deployment Attempt Over FPGA.
« Last post by dangerman on 2020.September.12. 11:00:49 »
as i saw Nick interrupt is on int1, and nothing on int2

It's been a while but I seem to remember that int2 is connected to the network port, so that networked Enterprises can be alerted if another machine is sending data.
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