MicroMac 68040 Quadra 650 Logic Board Upgrade

Updated: May 12, 1998
HARDWARE QUESTIONS
Q: On which Mac model can I install the Q650 logic board?
Q: Can I just replace my IIvi, IIvx or Centris 650 logic board with a Quadra 650 logic board?
Q: Is my power supply going to be strong enough for the new Quadra 650 logic board?
Q: Can I use the monitor I currently have connected to my Mac?
Q: Can I use the RAM I have installed in my IIvi, IIvx or Centris 650?
Q: I have 36MB installed on my Quadra 650 logic board but the System takes over 30MB of it and there is only about 8MB free. What is wrong?
Q: Can I use my MicroMac accelerator on the Quadra 650?
Q: Can I use the same peripherals I have attached to my computer?
Q: Are there other upgrades available for my MicroMac 68040 Quadra 650 Logic Board Upgrade?
Q: What does it mean 66/33MHz or 50/25MHz?

SOFTWARE QUESTIONS
Q: Can I just replace my IIvi or IIvx logic board with the Quadra 650 logic board or do I need a certain minimum System software?
Q: Can I install Mac OS 8?
Q: Am I now able to run any software which requires a 68040 processor?
Q: What if my software requires the "CFM-68K Runtime Enabler"?
Q: Since I installed the new Quadra 650 logic board I cannot print. What's wrong?


Q: I'm convinced, yes I want to get this upgrade, what do I have to do?


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HARDWARE QUESTIONS


Q: On which Mac model can I install the Q650 logic board?

A: The following Mac models have the same logic board factor as the Q650 and therefore the Q650will fit in these models:
Mac IIvi, IIvx, Performa600

Q: Can I just replace my IIvi, IIvx or Centris 650 logic board with a Quadra 650 logic board?

A: Yes. The Quadra 650 logic board has the same outline as the IIvi, IIvx or Centris 650 logic boards and fits into the chassis. However, upgrading from a IIvi or IIvx involves also a change of memory

Q: Is my power supply going to be strong enough for the new Quadra 650 logic board?

A: Yes.

Q: Can I use the monitor I currently have connected to my Mac?

A: Yes, the Quadra 650 supports the same monitors.

Q: Can I use the RAM I have installed in my IIvi, IIvx or Centris 650?

A: The Centris uses the same SIMMs as the Quadra. But the IIvi or the IIvx uses 30-pin SIMMs and the Quadra 650 uses two 72-pin SIMM. If you wish to use your 30-pin SIMMs you will need to purchase MicroMac's $19.00 SIMMchanger Memory Upgrade product (contact MicroMac for details).

Q: I have 36MB installed on my Quadra 650 logic board but the System takes over 30MB of it and there is only about 8MB free. What is wrong?

A: Verify whether you have 32-bit addressing turned ON in the Memory Control Panel. It is propably turned off since the new Quadra 650 logic board has the default settings in PRAM. Yout will also need to reset the Date & Time, Printer, Mouse speed, etc.

Q: Can I use my MicroMac accelerator on the Quadra 650?

A: No. The MicroMac accelerators available for the IIvi or IIvx are not compatible with the Quadra 650.

Q: Can I use the same peripherals I have attached to my computer?

A: Yes. However if you do sound recording the microphone has to be a PlainTalk microphone.

Q: Are there other upgrades available for my MicroMac 68040 Quadra 650 Logic Board Upgrade?

A: Yes. MicroMac has several upgrade options available:

• If you have the Quadra 650 logic board without an FPU you can upgrade it with one.
• If you have the 50/25MHz model of the MicroMac 68040 Quadra 650 Logic Board Upgrade you can upgrade it to the 66/33MHz version.
• If you wish to re-use your 30-pin SIMMs, MicroMac's $19.00 SIMMchanger Memory Upgrade product allows you to convert them to a 72-pin SIMM module. You can use four 1MB SIMMs and make one 4MB SIMM, or you can use four 4MB SIMMs and make one 16MB SIMM. However you can not use four 512KB, four 2MB, or four 8MB SIMMs.

To receive additional information on these upgrades, please contact MicroMac phone or visit our Web site at www.micromac.com.

Q: What does it mean 66/33MHz or 50/25MHz?

A: This is the frequenzy of your computer, like the RPM of your car, the faster the better. However it also depents on the CPU like it makes a different in which gear you are in. With the introduction of the 68040 processor there came the distinction between the CPU and the BUS speed. The CPU speed is always twice the BUS speed on a 68040 processor. Meaning 66/33MHz means 66MHz CPU speed and 33MHz BUS speed. HOWEVER, most of the software do not report the CPU speed, instead they report the BUS speed if they recognize a 68040 processor. Other with PowerPC processors they have a variable relation between the CPU and BUS speed, like a 150MHz 604 PowerPC runs at 150MHz, but the BUS runs at 50MHz. That means the ratio between the CPU and BUS is 3:1. Or a 200MHz 604e can have a ratio of 4:1 or 5:1, which means the BUS runs at 50MHz or 40MHz.


SOFTWARE QUESTIONS


Q: Can I just replace my IIvi or IIvx logic board with the Quadra 650 logic board or do I need a certain minimum System software?

A: The Quadra 650 needs System 7.1 with System Enabler 065. If you have 7.5 or later you should be fine. If you are using System 7.1, we recommend that you reinstall System 7.1 prior to installing the Quadra 650 logic board. When you reinstall the software from the installer program do it as "customized" and select "for any supported Macintosh".

Q: Can I install Mac OS 8?

A: Yes.

Q: Am I now able to run any software which requires a 68040 processor?

A: Yes. Unlike a 68040 accelerator upgrade where not all 68040 software will install and run, the LC465 logic board upgrade provides the necessary ROM and logic board information that some 68040 software require before installing onto your system.

Q: What if my software requires the "CFM-68K Runtime Enabler"?

A: The CFM-68K RunTime Enabler is required by some applications to launch properly (an example is America Online 3.0). This extension should be made available to your System software (Mac OS 7.5 - 8.0) if you installed the System software as "Custom Install" (not "Easy Install") under the installation "for any supported Macintosh". (If the System software is installed correctly, the CFM-68K RunTime Enabler will be located in the Extension Folder of your System Folder) .

Q: Since I installed the new Quadra 650 logic board I cannot print. What's wrong?

A: The new logic board does not have the printer information made available to it in its PRAM. To have the logic board identify your printer, select your printer in the Chooser again (the Chooser is located under the Apple Menu). You will probably need to also reset the Date & Time, Mouse speed and Memory Addressing settings from their respective Control Panels (located inside the Control Panels Folder inside the System Folder).

Q: I'm convinced, yes I want to get this upgrade, what do I have to do?

A: To place the order, use this form (there is also a phone number on this form to call).
At the time you place the order you will be given a RMA number for you logic board, which you send back to us after the new logic board is completely working. This RMA number also appears on your invoice. However, If you fail to return your logic board after a reasonable time, We'll charge you for your logic board. Otherwise we can not keep the lower price for this upgrade.


If you have further questions or find these FAQs need further updating, please email us at qaupdate@micromac.com or use the online form.


You my also use place your question on some mailing lists.