A few days ago, i was looking for Grundy Newbrain schematics. Now i have it (if somebody
need it, please let me know) -Thanks to Voyager- but i can?t solve the problem:
When i turn on the computer, the 16 character display flicks for 10 seconds. After this i
can see the image in TV or monitor screen:
new?brain??????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
???????????????????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
Uppercase are converted to lowercase
Spaces are converted to ?
Numbers are converter to alphabetical characters (1 to q, 2 to r, 3 to s ....)
but in 16 char. display all information is ok.
It look like add 32 to ASCII code to display, but it is not so, because
ASCII(1)+32=ASCII(Q) Q not q
If i move just a little the computer i can see the correct character in screen, but not
spaces, it still as ?.
It like there is a bad contact in componet board, but i've check all contact and i
can't found the fault.
Sombody know this problem?? There is not the flat cable conecting diferent boards.
Thanks and sorry by my english.
Luis
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Another thing .... do you know some emulator for Newbrain?
-----Mensaje original-----
De: cctech-admin(a)classiccmp.org [mailto:cctech-admin@classiccmp.org]En
nombre de Luis G?mez
Enviado el: lunes, 28 de octubre de 2002 18:04
Para: cctech(a)classiccmp.org
Asunto: Grundy Newbrain problems
A few days ago, i was looking for Grundy Newbrain schematics. Now i have it (if somebody
need it, please let me know) -Thanks to Voyager- but i can?t solve the problem:
When i turn on the computer, the 16 character display flicks for 10 seconds. After this i
can see the image in TV or monitor screen:
new?brain??????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
???????????????????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
Uppercase are converted to lowercase
Spaces are converted to ?
Numbers are converter to alphabetical characters (1 to q, 2 to r, 3 to s ....)
but in 16 char. display all information is ok.
It look like add 32 to ASCII code to display, but it is not so, because
ASCII(1)+32=ASCII(Q) Q not q
If i move just a little the computer i can see the correct character in screen, but not
spaces, it still as ?.
It like there is a bad contact in componet board, but i've check all contact and i
can't found the fault.
Sombody know this problem?? There is not the flat cable conecting diferent boards.
Thanks and sorry by my english.
Luis