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IIfx

68000
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About IIfx

Profile Information

  • Gender
    Male
  • Location
    VA, USA
  • Interests
    Computers, Telecommunications, Photography, Aviation

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  1. Interesting that a Toby card is being used in a Q700. It belongs more in a Macintosh II, IIx, or IIcx. Such a fast Mac like a Q700 should have a nice Quickdraw accelerated card occupying a nubus slot! The mounting for the speaker looks identical to the IIcx/IIci.
  2. IIci processor replacement

    You will need to replace some clock crystals to get the CPU to run at 33mhz. No guarantee that the motherboard will be able to handle other components linked to the CPU clock crystal at 33mhz.
  3. Revenge of the Clones

    The clones were indeed slowly killing Apple. Instead of taking the low end the clone machines were killing the margins Apple had on the high end. Letting clone manufacturers build machines nearly exactly the same as the top end Macintosh lineup was foolish. There was little differentiating the clones and the Apple originals. Often the clones had better cases than the awful brittle plastic ones Apple used at the time. Steve did the right thing. It hurt the clone partners but it had to be done.
  4. Pics of the whole external setup won't be coming until I organize my office. It's a cluttered disaster at the moment and I would be embarrassed to post it. Soon! The Rocket should be fine with the Mac286, so long as it's display mechanism won't conflict with RocketShare. No idea about RocketWare, that would be interesting to see if it works.
  5. The reason I thought you could delegate the SCSI-2 Booster is due to a blurb in the PhotoBooster manual. The PhotoBooster manual claims the host Mac can access the PhotoBooster, although I have not figured out exactly how that would work. It doesn't say how either. Just says that it can be done. Manual error?
  6. Any way to delegate the SCSI-2 on the StageII off to the host system? I'm assuming no. I will probably get a 3D printed case for the SCSI2SD so it can be mobile and hop from machine to machine. I have an OEM Radius SCSI-2 cable that came with the Rocket, it has a large rounded end on one side and a small SCSI-2 end on the other.
  7. Radius Rocket Guide/Troubleshooting Thread

    Rocket & Sound - MPEGDec Test Series Baseline 1: IIfx Host System 7.1.1 Pro, 80mb RAM MPEGDec works at low settings but ties up the whole system. Making user input can cause lockup. Works as intended. Baseline II: IIfx with Audiomedia II output System 7.1.1 Pro, 80mb RAM Playback at higher quality is possible but random stretching is introduced to the audio. System is responsive as sound IO is offloaded to the card. Not usable. CPU cannot feed Audiomedia II enough data. Test 1: Rocket StageII 40mhz, RocketShare v1.3.1, Rocket OS System 7.1, Host OS System 7.1.1 Pro, MPEGDec runs and plays MP3's through the IIfx motherboard audio although with random static noise inserted every other second, unusable. Attempt to assign Audiomedia II card directly to the Rocket was successful but the Sound control panel is inoperative. Attempting to list available sound outputs results in a Finder crash with or without the Audiomedia II assigned. RocketShare 1.3.1 bug? Works but not usable. Test 2: Rocket StageII 40mhz, RocketShare v1.3.1, Rocket OS System 7.1, Host OS System 7.1.1 Pro, AudioMedia II Host Audio Same as above config, but with the host OS routing all audio to the AudioMedia II card. Sound control panel on the Rocket is unusable, any action causes an unimplemented trap. MPEGDec plays for around 4 seconds with static and then hangs. Inoperative.
  8. Plan is to get a SCSI2SD v6 RevF with a fast 16gb SD card. Testing that others have done indicates that the SCSI2SD v6 should be able to completely saturate the IIfx SCSI bus. HDD in there now is an IBM 2gb drive from 1996.
  9. Radius Rocket Guide/Troubleshooting Thread

    Hate to necro the sticky, but here goes! As everyone knows, sound doesn't mix well with the Radius Rocket, at all. I'm trying to get MPEGDec working on my StageII rocket as there is an article on LEM that claims it works, "but requires further testing". Well, it kind of works. The problem is constant static over top the MP3. I got the great idea of dedicating the AudioMedia II card to the Rocket and having it play sounds through that card. The sound control panel in System 7.1 just crashes on the Rocket if you try to open the "Sound Out" section. The Digidesign extensions load fine and the Rocket can talk to the card, you just can't specify the output. Any ideas?
  10. I agree! It's my favorite Macintosh. Here are some screenshots of the beast running. I ran 250000 runs of Dhrystone on both the IIfx host and the Rocket StageII. Benchmark was run with AppleTalk and File Sharing active. IIfx 40mhz 68030/68882: 5681.8 Dhrystones per second Radius Rocket 40mhz 68040: 22727.3 Dhrystones per second
  11. Apple Ethernet NB - does it deliver?

    I will report this next time I have the IIfx apart, they are Okidata brand chips. Perhaps it's listed in the manual for the NB, I will check that too. As for newer CPU/DeclROMs I doubt it. I haven't seen many different revisions of the Apple Ethernet NB. There is a much newer version from around 1994 that lacks the 68000 CPU and memory, making it a plain SONIC chip Nubus card with dedicated bus transceiver chips. That card would have different ROM's but it's a completely different product with the same name tacked onto it. Your assumption about the networking microkernel OS just using the additional memory is probably right, as those ZIP sockets likely are hanging off of the 68000 memory bus. We have no visibility into the workings of said microkernel OS. Perhaps there is a way to query the microkernel via A/ROSE? We need to dig up the A/ROSE developer documentation to know for sure.
  12. Apple Ethernet NB - does it deliver?

    I had no idea that those are even called ZIP sockets! Thanks for sharing. I wonder if the card would even use the extra memory if equipped? It's not mentioned in the rather thick user manual.
  13. Apple Ethernet NB - does it deliver?

    Are you talking about the small amount of DRAM on the card? AFAIK that DRAM is dedicated to the card's 68000 for running the networking microkernel. I did some heavy work today on the IIfx, scanning old photos with an Epson ES-600C tri-color lamp scanner. The resulting files were fairly large* but moving them over the LAN was fairly painless and surprisingly fast for 10BaseT. *Around 8-15mb
  14. IIsi Internal SCSI

    At this point it would be worth removing all of the old capacitors off the board, cleaning the board with contact cleaner or alcohol, and then putting new caps. Use high quality Japanese ones. Almost all II series Macs will need new caps either now or very soon. My made in 1992 IIfx just started to leak recently and I caught it before any damage was done.
  15. Thought I would do a write up on my absolutely loaded Macintosh IIfx, now that the build is largely complete. Last night I got around to recapping the board, removing SMD electrolytic caps that were starting to leak. I also replaced most of the radials, leaving the yellow ones in as I had no equivalent on hand. Specifications: 80mb Host System RAM, 16mb in Bank A, 64mb in Bank B 64mb Rocket StageII RAM 40mhz 68030 & 68882 FPU + 40mhz 68040 on Radius Rocket StageII Radius/Apple 24AC Quickdraw Accelerated Video Radius PhotoEngine DSP Card Apple Ethernet NB, 10mhz 68000 on card SuperMac VideoSpigot AudioMedia II sound card with Motorola DSP Radius Rocket StageII with SCSI-2 PDS Booster 2gb IBM SCSI HDD 1 1.44mb SuperDrive BMOW Mac Rominator II MEGA 8mb ROM SIMM Radius Precisioncolor/17 CRT display System 7.1.1 Pro Manufactured 3-4-1992 in Freemont, CA This machine is a blazing fast 68k, no other way to put it. The special accelerated architecture makes mundane tasks like writing floppies a breeze where other 68ks would slow down and choke. It was owned by an aerospace engineer and investor/businessman. I am the second owner, so the machine has been well cared for. No idea how much this all would have cost back in 1992, no doubt it earns the name of "freaking expensive". Why did I name it the IIfx 40/DP AV? It has dual processors, albeit differing generations. Both CPU's run at 40mhz. The AV portion comes from the Spigot and the Audiomedia II card. Recap Process: OEM-like Nichicon caps were selected for the recap. Interestingly the IIfx logic board has pads underneath the axials for a very large surface mount can cap. So every cap pad in the IIfx is duplicated! The overall logic board post-repair: The system was stability tested by processing high resolution 1200dpi scans in TIFF format, simultaneously on the Rocket and the host machine. No crashes! Loadout: For per-slot card photos, see the following imgur album: https://imgur.com/a/BrHX8 More to come soon. Screenshots, overall case photos, etc.
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