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Bendix

Radius Pivot SE/30, large memory + Mode 32 - no mouse cursor

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So I installed 68 MB (4x16 and 4x1) on my SE/30 with the Radius Pivot 4bit grayscale and now I loose the mouse cursor movement (click still possible), if enable 32 bit RAM access in the Mode 32 extension. Without the 2nd display connected everything works fine. The machine works also fine, if I disable 32 bit RAM access, but then the RAM upgrade is rather pointless. Do you think, this is connected to the ROM not being 32bit clean?

IMG_1762.jpg

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Come on guys, this radius pivot setup with red and green connected to the blue line in order to get a greyscale picture on a vga TFT display is just a copy cat of numerous simliar configurations others posted here previously like @Bolleor @BadGoldEagle. None of you ever booted up his Mac with more than 8 MB ram? There must be some experience with this config somewhere out there, right?

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On 8/9/2020 at 9:11 AM, Bendix said:

None of you ever booted up his Mac with more than 8 MB ram?

Back when I was using this card, my SE/30 only had 8MB of RAM. When I upgraded to 32MB I also changed the ROM and removed the greyscale Pivot. I am currently on the lookout for the color SE/30 version. 

 

Here's the ROM SIMM I got: https://www.ebay.de/itm/GGLABS-512KB-MACSIMM-MAC-SE-30-IIsi-IIfx-flash-ROM-SIMM-64pin-Apple-820-0296-B/401282102630?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20170511121231%26meid%3Df45c6f2ea1e34b19940bbb5e346a1b3f%26pid%3D100675%26rk%3D1%26rkt%3D15%26mehot%3Dpp%26sd%3D401282102630%26itm%3D401282102630%26pmt%3D1%26noa%3D1%26pg%3D2380057&_trksid=p2380057.c100675.m4236&_trkparms=pageci%3A7d4056b1-dadc-11ea-a7af-74dbd1800bcf|parentrq%3Ad74e7b771730a9cb2cf7e342ffffef94|iid%3A1

It's a "stealth" upgrade: It comes preloaded with a IIsi ROM image (HD20 support) with ROM/RAM check disabled, is 32bit clean of course and has an SE/30 Gestalt ID (useful if you run 7.0 or 7.1). 

You just need to do a small hack to some system files to get it to work reliably. 

 

IIRC, my card also has a v1.0 ROM and it worked on 7.5.1 without any issues. 

Edited by BadGoldEagle

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8 hours ago, BadGoldEagle said:

IIRC, my card also has a v1.0 ROM and it worked on 7.5.1 without any issues. 

For those SE/30 grayscale Pivots that's the only ROM revision that exists I think.

Mine has v1.0 as well just like all the others I have seen so far.

ROMs from other Radius cards won't work with this card, because the EPROM also holds the configuration data for the FPGA, which makes the ROM specific to this card - unlike most other Radius PDS videocards where you can swap ROMs around between different cards.

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Many thanks to both of you! I just ordered the systen ROM simm @BadGoldEagle recommended. Maybe you can give me a hint reg the small hack to some system files sometime or maybe this is described in the shipment.

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Thanks cheesestraws, will do and then get back here to report, if this solves the paralyzed mouse cursor issue. I think it will take 2-3 weeks for the rom to ship from the US, it took at least that long for the 16 MB ram simms.

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Hopefully that'll fix your issue. But at the very least you'll have a 32 bit clean ROM and you won't have to use mode 32, which can be buggy sometimes (and annoying if you don't have a PRAM battery).

Also, you must delete mode32 after you install the new ROM.  

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I sadly have to report, that the 32 bit clean rom did not solve my problem of a freezing mouse cursor with a radius pivot SE/30 grayscale and more than 8 MB RAM. If the 2nd (pivot) screen is the main dektop I lose the cursor right after startup. With the SE/30 crt as the main screen it usually happens when I move a window to the pivot display.

 

But as BadGoldEagle said, at least I have a 32 bit clean rom now. So I put this into my 2nd SE/30 with ethernet, 128 MByte of ram and A/UX - now a fine unix machine. The radius pivot SE/30 has now 20 MB and Mode 32 in 24 bit mode. When there is no 2nd display connected to the Mac, I switch to 32 bit mode and have all the ram.  Otherwise I can only use the lower 8 MB. Still would be interested to learn if anyone else here has experience with radius cards and more than 8 MB.

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