20170421

Lining up

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Turns out I didn't need to look for exotic formats to solve this problem. I had physical copies of the disks with 10 sectors per track...
1 comment:
20170418

Not lining up

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Close, but not quite So, it looks like I'm getting closer. I read the disks with the 'physical' read option, which did sector...
20170417

Peering into the Venix Disks with read errors

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As you may recall from last time, I had 5 errors on two disks I'm trying to read for the Rainbow Venix Floppy project. The specific er...
20170415

Rainbow 100 Venix/86R Disks Found

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Recently, there was a post on an obscure retro-computing blog. It said that someone had acquired a Rainbow 100, which isn't so unusual (...
20170411

Installing FreeBSD-current with 11.0R installation image

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Just a quick blog to document a trick. Boot the install image (or even just a boot-only image). Get a Shell. At the shell, type # env UN...

Making Cables

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Tonight I assembled my cables I'll need to read my Rainbow 100B ST-251-1 hard drive I've had for a long time to get a backup. I re...
20170405

Compiling sdcc for FreeBSD

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In preparation for a possible new project, I needed to build sdcc, a compiler that targets a bunch of 8-bit architectures. You can find info...
20160919

Cool new FreeBSD 11/12 kernel developer trick

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One of the cool new features in FreeBSD 11 is that we can use the system compiler as a cross compiler, eliminating the need to rebuild clang...
2 comments:
20160918

Quick hack: creating a pcDuino3 bootable image from FreeBSD 11.0's BANANA PI image.

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Here's a tip about FreeBSD pre-configured armv6 images. For a given SoC, they are all (almost) the same. There's two difference for ...
1 comment:

Chain booting u-boot with u-boot

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Recently, I needed to test u-boot before I flashed a new u-boot image into NAND. In the past, when I've googled it, I find a lot of scre...
1 comment:
20160818

Creating a quick DNS server with a Rapsberry Pi2 and FreeBSD 11.0-RC1

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Raspberry Pi 2 and FreeBSD 11 and bind 9.9 for a name server Just thought I'd outline the steps to bring a Raspberry Pi 2 up with Fre...
2 comments:
20160815

Creating Logos for u-boot images

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The Default Logo: Tux By default, Das U-boot uses a penguin logo when it first starts up. This default looks something like  this Whi...
1 comment:
20160217

FreeBSD exposure on recent glibc DNS overflow

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Recently, there's been much talk in the news about CVE-2015-7547 affecting almost all Linux-based routers and many distributions. A qu...
20160109

Details on coming automatic module loading in FreeBSD

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Automatic Module Loading For a long time, I've wanted to add better, automatic module loading to FreeBSD. This past year, I started i...
3 comments:

Good, cheap scope.

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I recently found a good scope for my hacking needs on Banggood. Thought you might be interested in it. You can find it  here . It's the ...
20151226

Hard Float API coming soon by default to armv6

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All the CPUs that FreeBSD supports have hard floating point in them. We've supported hard float for quite some time in the FreeBSD kerne...
1 comment:
20151223

NanoBSD reved up for embedded

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NanoBSD Enhancements I've been experimenting with NanoBSD enhancements for embedded. Eventually, they will be in the mainline of Nano...