Clock chipping update

I haven’t written about my IIsi clock-chipping results yet because it did not turn out as planned. It took quite some time to perform the mod, and when it was done, the machine only gave me error tones when powered on. Today I had a few moments to better assess the situation. I confirmed what I had feared – that I had cut a trace on the motherboard while replacing the crystal. It was a trace going to the memory slots, which explained why I was experiencing ascending tones indicating a memory problem. I repaired the severed trace today and put the machine back together only to hear the same tones. After testing multiple configurations of memory, I determined that the machine will boot if all RAM slots are empty. Well, it doesn’t actually boot because it says that System 7.5 requires more memory to boot. Perhaps System 6 will boot? Anyway, I may have ended up sacrificing all memory expansion for a 5Mhz increase in clock speed. Pretty bad numbers, eh? Oh well, I’m sure to come across another IIsi logic board someday. :) In the meantime, if anyone has any suggestions for me, please let me know. Read More ›

Back on the 6bone

We’re back on the 6bone at home. I lost my IPv6 tunnel a few weeks ago while I was in the process of upgrading / patching my kernel. I lost ip_tables functionality temporarily during the upgrade, so I shut down the tunnel temporarily for security concerns. Hurricane Electric permanently shut down the tunnel after a week of inactivity. I just got ip_tables back yesterday, so I quickly signed back up for a new tunnel. I had to modify my configuration for the new IPv6 adresses, and modify my DNS accordingly. So, http://ipv6.jonandjolene.com is up again. (Link will not work unless you have an IPv6 stack installed and are on the 6bone) I’m glad to have it working again because IPv6 makes me feel so cool.

Edit: And, for the first time, ipv6.jonsharp.net works. Now that I’ve migrated to Apache 2, I no longer have to use the khttpd ipv6 hack I was using. This means I can actually do ipv6 virtual hosts. Excellent.</Mr. Burns Voice> Read More ›

Ordered a 50Mhz Full-size TTL crystal oscillator

I placed an order yesterday for a 50Mhz full-size TTL crystal oscillator. I plan to use it to “clock chip” my old Macintosh IIsi. (For more information on clock chipping, visit this excellent site.) Anyway, the IIsi has a Motorola 68030 CPU running at 20Mhz, half the speed of the 40Mhz crystal that drives it. I plan to replace this 40Mhz crystal with the 50Mhz part I ordered from Mouser Electronics. This form of overclocking should gain me nearly a 25% boost in performance, driving my CPU speed from 20Mhz to 25Mhz. Anyway, I’m really looking forward to performing this surgery. The IIsi’s logic board is removed and my soldering iron ready! Read More ›

Caffe Nonna

I’m not accustomed to writing restaurant reviews on my website, but I had dinner last night at Caffe Nonna in Nashville. Wow! It was really good food! Jolene and I went for my birthday. It is a small, Italian restaurant with a lot of character. The bread and olive oil was excellent. The olive oil mixture had parmesan cheese and balsamic vinegar. Jolene and I shared their portobello salad. It was perhaps the best salad I’ve ever had. The portabello’s were very tender and marinated perfectly. The generous amount of gorgonzola just made the salad. Jolene had a smoked gouda-filled ravioli and portabellos in a creamy pesto sauce while I had the spicy marinara sauce on angel hair pasta with calamata olives. Both dishes were excellent. Mine was spicier than I had bargained for, but still very unique and flavorful. Jolene’s dish was delicious. The pesto sauce was very creamy. All the ingredients tasted very fresh.

The best part, of course, was dessert. We each had our own, because we wanted to sample their selection. I had the Tiramisu and Jolene had the citrus-ricotta cheesecake. Again, both desserts were excellent. The Tiramisu was light and creamy. The cheesecake was very unique. The ricotta made the cheesecake very light and the citrus mixture poured over it was perfect.

We had a wonderful dining experience at Caffe Nonna and recommend it to anyone in the Nashville area. Read More ›

Getting Greedy

While I was very satisfied with my successful PowerBook overclocking, I was left with the nagging thought that this G3 could handle higher speeds. :) So, I decided to try the 83Mhz FSB. I knew this would likely give the greatest increase in performance, with the greatest risk of instability. I started by resetting the multiplier to 6, while altering the resistors responsible for the FSB. It would not POST. No lovely Apple chime. The screen remained black, though the machine was clearly on. I tried removing one of the dimms and making sure the cpu module and memory were both seated properly. Still nothing. I figured it was time to try for 500Mhz by using a multiplier of 7.5 with the original FSB of 66Mhz. I reconfigured my resistors, reinstalled the cpu module, and powered my Lombard up while crossing my fingers. It booted right up into OS X (10.4 Tiger preview). So far so good. It read “500Mhz PowerPC G3 Processor” under “About this computer”. Excellent! Now, I knew OS 9 was a bit more finicky, so I decided to reboot into 9 to test stability. It booted up into 9 just fine, but Apple System Profiler crashed. GLQuake crashed. I tried rebooting, but the system just wasn’t stable. I think the CPU was getting too hot. I decided 466 was my magic number. I reset the resistors and my stability was restored. I’m currently making this post using Mozilla 1.3.1 under OS 9 on this machine right now. At least I satisfied my curiosity (without ruining my CPU) and hopefully provided some useful stability information for anyone attempting this in the future. :) Read More ›