Schrijver
| Sanyo WAVY70FD RAM upgrade
|
SeD_NcL
msx lover
Berichten: 83 |  Geplaatst: 28 Oktober 2004, 06:55 |
The Wavy 35 is without a diskdrive...
|
|
Repair-Bas
msx addict
Berichten: 388 | Geplaatst: 28 Oktober 2004, 07:12 |
The worst what you can do is desolder the chips.
You can damage the PCB, and that is the only part what you cannot replace.
I use a 50 W solder-station.
and a 75 W desolder-station
It is very important to use a solder-station and not a solder-iron.
And I am very sure that it is impossible to extend the computer to 512 kB without any other changes, bacause the ram-chips don't fit in places of the normal 64 kB ram.
It is very easy to extend the computer to 128 kB
|
|
dhau
msx master
Berichten: 1057 | Geplaatst: 28 Oktober 2004, 15:37 |
I use Solomon SL-20 soldering station (grounded, low voltage, regulated 50-300c), and I never had issues desoldering components
|
|
POISONIC
msx professional
Berichten: 883 | Geplaatst: 28 Oktober 2004, 17:49 |
well i did not no abouth a converter print :?
does any one has a sceme of that converter print then?
|
|
Repair-Bas
msx addict
Berichten: 388 | Geplaatst: 28 Oktober 2004, 18:50 |
You can see on the photos from msxposse that under the chips is an extra pcb.
The prints were homemade and inverted by Digital KC.
I used it a lot of times, but now I am out of those pcb's
|
|
POISONIC
msx professional
Berichten: 883 | Geplaatst: 28 Oktober 2004, 19:17 |
ok
|
|
Alexandre_Taito
msx freak
Berichten: 183 | Geplaatst: 09 Maart 2006, 02:51 |
Did it on a 70FD2. I'll publish the tutorial and like later in www.tabajara-labs.com.br (the article will be in Portuguese, but I'd love someone who speaks english, translate it to me. Unfortunately I'm short on free time)
It is easy, but involves making a small board to fit the 4 x 44256 RAMs. |
|
HansO
msx addict
Berichten: 375 | Geplaatst: 09 Maart 2006, 08:13 |
Quote:
| Did it on a 70FD2. I'll publish the tutorial and like later in www.tabajara-labs.com.br (the article will be in Portuguese, but I'd love someone who speaks english, translate it to me. Unfortunately I'm short on free time)
It is easy, but involves making a small board to fit the 4 x 44256 RAMs.
|
I can help with the english. |
|
Alexandre_Taito
msx freak
Berichten: 183 | Geplaatst: 09 Maart 2006, 11:17 |
HansO, do you speak portuguese?  Never would imagine that  |
|
dhau
msx master
Berichten: 1057 | Geplaatst: 10 Maart 2006, 04:20 |
I upgraded my Wavy 35J about a year and a half ago. Wasn't any harder then WX/WSX/FX upgrade. Just need two wires from MSX engine for extra address lines and stick four DRAM chips on a small PCB. I used wire from old 40-pin IDE cable, trying to keep it as short as possible. Works really well.
|
|
HansO
msx addict
Berichten: 375 | Geplaatst: 12 Maart 2006, 10:45 |
Quote:
| HansO, do you speak portuguese? Never would imagine that
|
I can decipher most of written portugese. Dont ask me to speak or write in portugese! |
|
Alexandre_Taito
msx freak
Berichten: 183 | Geplaatst: 12 Maart 2006, 17:05 |
So feel free to take a look at the msx section on my page and do whatever you want, I hope to have the Sanyo ram upgrade article online tonight.
|
|
Alexandre_Taito
msx freak
Berichten: 183 | Geplaatst: 18 Maart 2006, 21:15 |
Done. http://www.tabajara-labs.com.br with a complete tutorial to upgrade the Wavy (and other MSXs with the T9769 chip) to 512K mapper ram. It is only in portuguese, if someone translate it to english drop me a mail. |
|
ibanezman1990
msx user
Berichten: 40 | Geplaatst: 19 Maart 2006, 14:53 |
Jes me too  |
|
novi^skt
msx friend
Berichten: 7 | Geplaatst: 14 April 2007, 12:23 |
|
|
|
|
|
