20 January 2018, 13:00 | #1 |
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My 4 MB extra RAM
Have anybody any experience with this 4 MB RAM for the Amiga 1200? (See photo attached).
Is there any way I can test it? In the system where I can see that it is actually working? Some of my AGA 4MB games won't start. |
20 January 2018, 13:08 | #2 |
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You can check the board is being seen by the system by check the expansion board section in the early start menu. For the ram, starting workbench you should see the extra fast ram listed in the title bar.
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20 January 2018, 13:15 | #3 |
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OK. This is what the memory information says. It only says 2 MB. So the 4MB extension it's not working?
The CR2032 battery on the expansion. Could that be the easy fix? |
20 January 2018, 13:28 | #4 |
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You need to click next there as any fast ram will not show up on that screen (which is showing you the chip ram). Does the card appear in early boot menu expansion section? if it does then you at least know the card is being seen.
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20 January 2018, 13:37 | #5 |
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Nothing happened when I click next. Just a blink on the screen. Early boot menu expansion section? Where do I find that?
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20 January 2018, 13:52 | #6 |
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I found it. When I had my extension card in the screen turned yellow when I tried to access the boot menu. I then took out the extension card , and I got to the menu.
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20 January 2018, 14:01 | #7 |
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Took it out. Cleaned it. Now the yellow screen is gone. And holy smoke!!! It's working 😂😂
Thanks |
20 January 2018, 14:11 | #8 |
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Still some AGA games that won't start. But the RAM is working at least. Any tricks?
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20 January 2018, 14:12 | #9 |
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Sometimes it says can't allocate expmem when I try to start a AGA game
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20 January 2018, 14:14 | #10 |
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Only rather few games need even 4MB of fast RAM. Which titles are you having trouble with?
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20 January 2018, 14:32 | #11 |
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I shall check what titles that doesn't work later today. I am using a 8 GB memory card with games on.
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20 January 2018, 17:07 | #12 |
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20 January 2018, 20:37 | #13 |
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I will try some games later today and I will let you know.
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21 January 2018, 02:29 | #14 |
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If its bigger games, try disabling preload? Might just be running out of memory?
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21 January 2018, 12:19 | #15 |
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How do I disable preload,?
Last edited by Lasse; 21 January 2018 at 12:34. |
21 January 2018, 12:42 | #16 |
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I disabled magic menu, new icons, smart Win and tools deamon. And now it's working.
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02 December 2018, 12:40 | #17 | |
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Quote:
Ive just got this error while trying to play Speris Legacy AGA, Ive looked at the ram board and it has 3 jumpers, LK1 4/1Mb or 8/2Mb, LK2 8/4Mb or 2/1Mb, LK3 2Mb or 8Mb. Ive moved the jumpers around and I can get it to report fast ram upto 2Mb or 6Mb but I cant get 4Mb. should I remove a jumper on any of the LK#? I set it up so that I had 2Mb chip and 6Mb fast and I get a 'bad workbench config' (or something similar). Ive restarted my machine and now speris legacy is booting. any ideas what the best set up will be for a fully functional usable 1200? edit: Ive found a 4th jumper (INT/CPU) not sure what this is for but it sits next to the empty fpu socket. Ive played with the configuration of the first 3 jumpers. If I set LK3 to 8Mb I get this config: Start Address $00200000 End Address $009FFFFF Total Size 8Mb Priority 0 Lower Bound $00200020 Upper Bound $00A00000 First Address $0028D2D0 Amount Free $6195976 No. of chunks 103 Expansion Memory Start Address $00000000 End Address $001FFFFF Total Size 2Mb Priority -10 Lower Bound $00000420 Upper Bound $00200000 First Address $000007B8 Amount Free $1780832 No. of chunks 6 Chip Memory but if I swap LK3 to 2Mb config I get this: total size 8Mb First Address $00289410 Amount Free $6196184 No. of chunks 90 Expansion Memory Lower Bound $00000420 Upper Bound $00200000 First Address $000007B8 No. of chunks 6 chip memory the number of chunks differs each time I move a jumper either 5, 6 or 7 for the chip ram and 90, 101 or 103 for expanded ram. what do the chunks mean? and what is the best config? I cant get it to use 4mb, it can see its set to use 4mb but WB3.0 only see's 2mb. why? would it be worth adding a 68882 fpu? Last edited by ItsTheSmell; 02 December 2018 at 15:27. |
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03 December 2018, 14:01 | #18 |
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anybody?
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03 December 2018, 16:35 | #19 |
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Have you tried the software "systest" by Keir? That has a tool to test the RAM directly... not sure if it will help identify the faulty RAM chip?
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03 December 2018, 20:53 | #20 |
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