Spectrum Computing

got a defective vega+ , anyone who has knowledge of this "thing"




jojo

to start ;

can you power it up as a 16k ,
then have a look at the screen , if your problem is gone -> upper memory fault.

try to find someone with a retroleum test card

and the unit is 1.17 !!
works as described by many users .

now seeking to find 1.18 and even 1.19

I would like to make the tzxduino firmware for oled , but if i try 1.17 i only get errors in the arduino ide . i am not a pro , so i am stuck at that point . Is there any young member who wants to make a .hex file for me ( and if possible an even more recent version - goes up to 1.19 ) and whilst ta...

thanks for all help and the files transferred to me ,

i destilled some files from all and currently they are at the printer's


jojo

https://vdrivezx.com/vla1-sinclair-inte ... inal%20ULA.



mind customs and tax costs !!

Does anyone have the correct sizes to the stickers used on the zx80 ??

i have several templates , but it turns out they all heve different sizes .

Second question ,

what material was used for the original stickers ?



Jojo

http://www.zx81stuff.org.uk/zx81/tape/1 ... Inside.jpg


https://users.ox.ac.uk/~uzdm0006/scans/1kchess/



looking for 16k version .

As i am not a 3d guru i asked the specialists in this forum first .

and indeed i want to recreate it to accompany my zx80 clone

you use paint to make an excisting black one WHITE ........................

but i need a black one first .

The zx80 original UK version was a rather bulgy box with the contacts embedded in the plastic .

i would like to recreate the white version ( but don't have any 3d experience , except for using the prints ).

Anyone ever made an stl file ( 2 ) for the original zx80 power supply ??

all info is helpfull

and it is working again !!

the soldering iron did its job .
reflowed the ear and mic sockets took care of the problem .

verified with 4 128 game cassettes and 2 different cassette players .

Thanks all who helped !!

sorry for the delay , real life takes a lot of time at the end of the year this is what happens ; https://i.postimg.cc/xX1pmx4B/IMG-1767.jpg on the other 128's the file loads fine . and the spectrum 128 has been tested with the smart-card diagnose system without any memory errors . any suggestions ??

The same tape , with the same cassette recorder and the same cables does load on 2 other 128 's

Hi forum , i am trying to repair for a friend , spectrum in 128 mode crashes when tape loading , in 48 mode it is fine what am i overseeing here ?? i have tested the 128 for 24 hours , and no ram errors came up . in fact all things possible testing ( with the smartcard v2 ) cam out without errors . ...

Please don't kill me if this question has been posted already ( tried to search but .... ) Is there a possibility to get a zip of the spectrum games ? I found several sites with software but found that downloading them title by title consumes soo much time , that i was hoping someone was having a zi...

NO one ??


no one making pcb's anymore ??

Hi forum ,

i am searching for someone who can assist me merging 3 gerber pcb files into one .

i am stuck with this .......

please pm me as i can then sent the files to your email .

pcb size 100x100 mm , designs are much smaller so as much of them on this dimension would be helpfull

great , more search work to do .

the anoyance here is that i repaired it some time ago and it had been memeory testing for a full night without problems .

and it came back witht his problem .......

mark , thsanks for thinking with me ......


the strangy here is it works fine as a 16k machine , ihave replaced all chips in the 48 line ( logic and ram ) with verified components and the error stays the same .

has the ula some influence in this ( don't have a replacement at hand )

mark ,


resistance values are okay ,
voltages remain stable with ic 9 removed

keeps baffling me this one

even with a new 7805 those thing stay freakingly unreliable

i hust went through 9 of them , and could only revive 3 with average result

both elco , ceramic cap and patch on v in of the ula .

as there more i forgot ??

Can anyone help me out , would like to transfer the Parker Brothers rom games to SNA files so i can use them in a flash-card ( old style interface 2 ) i managed to get some reults , but apparently there are some issues with the generating of "usable" sna files has anyone some ideas jojo

this problem has baffled me , hopefully you can help me forward , original situation, only white vertical bars and a heat-smell from the inside . memory ic 9 was heating up immensely . so i socketed ic 9 and put in a fresh verified chip , result it went up in temperature skyhigh. all other lower ram...