Hi folks.
My first color mac was a 2nd hand LCII I got back in 1995.
A couple years ago I got a new LC II. I got it all the way from France to Brazil, hence I cal him Frenchy (my language has gramatical gender and computers are masculine lol).
I am little by little upgrading it to the dream machine from my youth. It has now:
Recently (In fact it got here today) I got an Apple Ethernet LC Card and an extra pair of 30 pin 4MB SIMMs.
Here comes the problem: When I install the RAM and start with Extensions Off, I get the 10MB of ram (4 soldered + 8 installed - 2 not addressed). However, if I turn on extensions there's no way it will successfuly boot! I get either:
I tried even removing the FPU, to no vail. I also tried to boot from 3 different disk images, using system 7.1.2 or 7.5.5. Both started up ok with Extensions Off but could not boot properly when extensions were enabled.
Another symptom: when booted with extensions off and left running with 10MB, I noticed some video artifacts. Tiny pink dots in rows across the screen, very few, but they are there.
Do I have wrong SIMMs? In fact I bought them from a fellow collector who removed them from an IBM 386. They are 9 chips SIMMs.
VRAM Issue (due to the artifacts)?
Do I have any other issue?
Any suggestions?
As always thanks for any help.
My first color mac was a 2nd hand LCII I got back in 1995.
A couple years ago I got a new LC II. I got it all the way from France to Brazil, hence I cal him Frenchy (my language has gramatical gender and computers are masculine lol).
I am little by little upgrading it to the dream machine from my youth. It has now:
- FPU - I soldered the socket and added a 16MHz 68882
- 512k VRAM
- Blue SCSI
- SC-88 MIDI
- Assanté SCSI-Ethernet networking (the real deal, not emulated)
Recently (In fact it got here today) I got an Apple Ethernet LC Card and an extra pair of 30 pin 4MB SIMMs.
Here comes the problem: When I install the RAM and start with Extensions Off, I get the 10MB of ram (4 soldered + 8 installed - 2 not addressed). However, if I turn on extensions there's no way it will successfuly boot! I get either:
- Freeze during startup before any extension icon is displayed in the bottom of the screen
- Illigal instruction
- Sad Mac (0000000F / 00007FFF)
I tried even removing the FPU, to no vail. I also tried to boot from 3 different disk images, using system 7.1.2 or 7.5.5. Both started up ok with Extensions Off but could not boot properly when extensions were enabled.
Another symptom: when booted with extensions off and left running with 10MB, I noticed some video artifacts. Tiny pink dots in rows across the screen, very few, but they are there.
Do I have wrong SIMMs? In fact I bought them from a fellow collector who removed them from an IBM 386. They are 9 chips SIMMs.
VRAM Issue (due to the artifacts)?
Do I have any other issue?
Any suggestions?
As always thanks for any help.
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