L'atelier BIOS for use the F4 Register in a NMS8245 expanded to 2+
Hi all!
I'm trying to search a Bios to use in my NMS8245 expanded to MSX2+.
I have the F4 Register installed,but with my current Bios I can't see the boot logo
Someone can tell to me where I can found the bios that I need?
Thanks!!!
I'm trying to search a Bios to use in my NMS8245 expanded to MSX2+.
I have the F4 Register installed,but with my current Bios I can't see the boot logo
Someone can tell to me where I can found the bios that I need?
Thanks!!!
Hi pablibiris
what eprom have you in you 8245 ?
the port F4 required
32K bios2p
64k subrom + kanji
try with this files :
BIOS2P
SUBROM2P
Eproms 2plus.zip
what eprom have you in you 8245 ?
the port F4 required
32K bios2p
64k subrom + kanji
try with this files :
BIOS2P
SUBROM2P
Eproms 2plus.zip
Thanks Jipe 
I only have 1 eprom in my computer. It's possible to burn a eprom with these two files? And if it's possible,what should be the order?
My NMS8245 have a eprom with a bios without MSX logo
I only have 1 eprom in my computer. It's possible to burn a eprom with these two files? And if it's possible,what should be the order?
My NMS8245 have a eprom with a bios without MSX logo
Waw!
It would be very difficult to explain how to make it?
I don't want to bother you too much...sorry!
It would be very difficult to explain how to make it?
I don't want to bother you too much...sorry!
il faut d'abord que je retrouve mes petits car je n'ai fait qu'un seul 8235/39 avec la totale
et ça date !!
je dois le refaire dans un 8245 qui est trés similaire si Pablo peux patienter
ça tourne autour des roms et des slots internes employés mais il faut que je révise
et ça date !!
je dois le refaire dans un 8245 qui est trés similaire si Pablo peux patienter
ça tourne autour des roms et des slots internes employés mais il faut que je révise
Make a 64k 27C512 eprom with the 64K files and plug on 8235/8245
Make a 32k 27C256 eprom with the 32k file
8235-8245-2P.rar
on the 27C56 lift the pins 1 , 20 , 22 , 27 and solder upper the 64k
make a wire pin 1 Eprom to 28 pin Eprom 27C256
make a wire A14 pin 4 Z80 to pin 27 Eprom 27C256
make a wire /CS12 pin 3 of Slot to pin 20 Eprom 27C256
make a wire /SLT3/30 pin 48 M60003A to pin 22 Eprom 27C256
after you have :
32k Bios at 0000H in Slot 0 ( in the 27C512)
16 K Subrom at 0000H in slot 3.0 ( in the 27C512 )
16 K Disk at 4000H in slot 3.3 (in the 27C512 )
16 K Subrom at 4000H in slot 3.0 (in the 27C256 )
16 K Kanji rom at 8000H in slot 3.0 (in the 27C256 )
good luck
Make a 32k 27C256 eprom with the 32k file
8235-8245-2P.rar
on the 27C56 lift the pins 1 , 20 , 22 , 27 and solder upper the 64k
make a wire pin 1 Eprom to 28 pin Eprom 27C256
make a wire A14 pin 4 Z80 to pin 27 Eprom 27C256
make a wire /CS12 pin 3 of Slot to pin 20 Eprom 27C256
make a wire /SLT3/30 pin 48 M60003A to pin 22 Eprom 27C256
after you have :
32k Bios at 0000H in Slot 0 ( in the 27C512)
16 K Subrom at 0000H in slot 3.0 ( in the 27C512 )
16 K Disk at 4000H in slot 3.3 (in the 27C512 )
16 K Subrom at 4000H in slot 3.0 (in the 27C256 )
16 K Kanji rom at 8000H in slot 3.0 (in the 27C256 )
good luck
No problem...first of all,I want to make run this computer like MSX2+. Later I will see how to fix this 
Well...I can't wait for this 
I followed all your instructions and not seems to work
I have a doubt:
The 64k Eprom dont need to lift any pins...right?
And,you say "make a wire pin 1 Eprom to 28 pin Eprom 27C256". With this,I'm putting A15 of the two eproms,to VCC,right?
My last question...in your pic,you have 3 eproms. I only must have 2?
Thanks again! Edité par Pablibiris Le 03/10/2016 à 21h52
I followed all your instructions and not seems to work
I have a doubt:
The 64k Eprom dont need to lift any pins...right?
And,you say "make a wire pin 1 Eprom to 28 pin Eprom 27C256". With this,I'm putting A15 of the two eproms,to VCC,right?
My last question...in your pic,you have 3 eproms. I only must have 2?
Thanks again! Edité par Pablibiris Le 03/10/2016 à 21h52
the 27C512 is just inserted in socket
i sink you have QWERTY keyboard : verify if pin 22 of 27C512 ( A16 ) is on ground else invert JP1 JP2
just the pin 1 of 27C256 ( VPP )is putting to the pin 28
the final version have 2 eproms
i sink you have QWERTY keyboard : verify if pin 22 of 27C512 ( A16 ) is on ground else invert JP1 JP2
just the pin 1 of 27C256 ( VPP )is putting to the pin 28
the final version have 2 eproms
Jipe pour éviter toute confusion, j'ai remarqué que tu n'utilises pas le bon verbe en anglais pour dire "Souder"
Tu utilises : Sold : qui veut dire vendre
Souder se dit : To Solder
d'où ta phrase un peut plus haut : "on the 27C56 lift the pins 1 , 20 , 22 , 27 and sold upper the 64k" qui doit donc s'écrire : "on the 27C56 lift the pins 1 , 20 , 22 , 27 and solder it upper the 64k"
Tu utilises : Sold : qui veut dire vendre
Souder se dit : To Solder
d'où ta phrase un peut plus haut : "on the 27C56 lift the pins 1 , 20 , 22 , 27 and sold upper the 64k" qui doit donc s'écrire : "on the 27C56 lift the pins 1 , 20 , 22 , 27 and solder it upper the 64k"
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