| Title: | AMIGA NOTES |
| Notice: | Join us in the *NEW* conference - HYDRA::AMIGA_V2 |
| Moderator: | HYDRA::MOORE |
| Created: | Sat Apr 26 1986 |
| Last Modified: | Wed Feb 05 1992 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 5378 |
| Total number of notes: | 38326 |
I have a friend who has a REV6 A500 motherboard. It had 4 empty RAM
sockets. I bought the correct RAM chips and installed them.
Unfortunately the amiga could not see this memory- So I changed JP2
(which according to the Amiga manual changes the location of the
external memory from $c00000 to $08000). This results in me finding out
that I now have 1M of chip RAM but when I plug in the A501 expansion
and power on the system I just get a constant guru ( no guru number -
just the power light flashing continously).
Has anyone else tried this with success ???
Thanks in advance for your help - Shaun.
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 3697.1 | recent A500 only ? | YIPPEE::GOULNIK | Yves GOULNIK - EAITC/Mfg Valbonne | Fri Apr 20 1990 03:55 | 6 |
Just as a matter of interest, how does one find his/her Amiga 500 motherboard is a REV6 ? Does that mean later A500 had more room for additional RAM ? Yv | |||||
| 3697.2 | Weird memory expansion problem | LETOUR::HENNESSY | IMAGES....diddled here.... | Fri Apr 20 1990 10:24 | 24 |
I have a weird expansion memory problem with my A500.
I just bought a 501 clone to expand my A500.
When I plug it in, my system does not boot, no workbench picture on
the screen, nothing.
Take out the 501 clone. The system boots.
I took the A500 and the clone back to the store. We tried several
clones, even one from the A500 in the demo area. Same thing.
So I left it for them to fix.
They told me yesterday that there is a difference in the current
sinking ability between the older(my A500 is 20 months old) and
the new A500s. It appears that I have to buy a real 501(and pay
over 100% more!) because the real 501 board does not have the
additional pull down/ups that the clones have?!?!?!?!?!
Anyone know anything about this problem? A solution?
Thanks,
Rich.
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| 3697.3 | Recent A500 only | GIDDAY::MORAN | I'm not bad-I'm just drawn that way! | Fri Apr 20 1990 23:22 | 9 |
Unfortunately you have to open the beast up to find out if it's a Rev6
motherboard. If you look at the right hand side of the Amy it should
say the Rev number there.
The other way is to see if you have 16 chips for ram (rev 5) or 4 chips
with 4 blank spaces for more there (rev 6).
Shaun
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