joevt's latest activity
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Jjoevt replied to the thread Page Buffer Capture from Radius FPD/SE VRAM Input - First baby step to cloning Card.I think one of the goals is to be able to use the 68K driver unmodified without having to write a new driver. This driver is on disk or...
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Jjoevt replied to the thread Page Buffer Capture from Radius FPD/SE VRAM Input - First baby step to cloning Card.I suppose one could take a video of the display to see if the raster is horizontal or not. It must be horizontal according to the...
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Jjoevt replied to the thread Weird.. post deletion?.An owner of a thread can delete the work of others by deleting their thread? That seems wrong.
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Jjoevt replied to the thread Page Buffer Capture from Radius FPD/SE VRAM Input - First baby step to cloning Card.Disconnecting data bits is one way to determine order of the bits. We know the order of the bits as seen by the Mac CPU side: big endian...
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Jjoevt replied to the thread Page Buffer Capture from Radius FPD/SE VRAM Input - First baby step to cloning Card.The CPU is a 68K CPU. QuickDraw will use 68K CPU instructions such as MOVE or MOVEM to read and write pixels from and to VRAM for...
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Jjoevt replied to the thread Page Buffer Capture from Radius FPD/SE VRAM Input - First baby step to cloning Card.Does the Radius FPD/SE provide a vertical blanking interrupt?
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Jjoevt replied to the thread Page Buffer Capture from Radius FPD/SE VRAM Input - First baby step to cloning Card.Random access input and the serial output are both 16 bits wide. Figuring out data order of one will determine the order of the other...
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Jjoevt replied to the thread Page Buffer Capture from Radius FPD/SE VRAM Input - First baby step to cloning Card.I expect SOE to be tied together - that's an input. SO0 - SO3 are outputs and are probably used for the output raster. That's how most...
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Jjoevt replied to the thread Page Buffer Capture from Radius FPD/SE VRAM Input - First baby step to cloning Card.I had some comments/questions in the corresponding 68kMLA thread but it's not been accessible the past couple of days... I guess I'll...
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Jjoevt replied to the thread Bank Distinction on PMX500 and 7200 DIMM?.Here's options for my fork of DingusPPC to allow the 1995-08 - 9630C68B - Power Mac 7200&7500&8500&9500 v2, SuperMac S900 ROM to detect...
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Jjoevt replied to the thread Bank Distinction on PMX500 and 7200 DIMM?.The algorithm for Hammerhead is different than for Platinum. Platinum Bank Base registers support addresses with this mask: 0x7FE00000...
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Jjoevt replied to the thread Bank Distinction on PMX500 and 7200 DIMM?.Maybe the hardware allows it. I don't think the ROM HWInit memory detection routines for Platinum might not. I've attached startup...
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Jjoevt replied to the thread Bank Distinction on PMX500 and 7200 DIMM?.Here's the Platinum ERS.
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Jjoevt replied to the thread Bank Distinction on PMX500 and 7200 DIMM?.On the DingusPPC Discord, you can find some memory controller documentation. Search for these: filename:Platinum_ERS_1.0.pdf...
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Jjoevt replied to the thread Bank Distinction on PMX500 and 7200 DIMM?.A 128 MB DIMM is represented by two 64 MB banks in the Hammerhead and Platinum memory registers. In DingusPPC, 64 MB DIMMs and smaller...