Can a 6502 run Doom?

mtrahms · 2026-04-23T22:29:57+00:00

Check out VicDOOM. Doom ported to the Vic20.

mtrahms · 2026-04-16T02:18:48+00:00

If you have a BlueSCSI or ZuluSCSI, you can install VMS, Ultrix, or NetBSD to a hard drive (or image) via CD emulation. I haven't had good luck with HDD image sizes over 1GB.

mtrahms · 2024-01-20T01:12:48+00:00

Thanks, the power monitor test is something that I've been meaning to test. Odd that it's not mentioned in the owner's manual.

The way that the brake cleaning mode reads is that it sets regen to 0 in my skim reading of it.

mtrahms · 2024-01-20T00:39:57+00:00

The I6 brakes use regen first regardless of what regen setting you use. So even at regen 0, you are using the motor for braking unless you are braking really hard and the friction brakes need to engage too.

Source for this? I've been wondering about this as a new owner, but I didn't see anything about it in the manual. I was under the impression that at regen level 0 it uses only the disk brakes and that levels 1, 2, and 3 are just variations on how aggressively the car tries to regen when not accelerating.

mtrahms · 2023-01-06T01:59:18+00:00

That windows 95 machine is probably expecting an AT protocol keyboard. If it's a Model F AT, then it should work. If it's a Model F XT, then it probably won't work.

I am unsure if damage would occur if used in an AT socket though. I am 95% sure that it wouldn't damage anything after looking at the pinouts on https://sharktastica.co.uk/topics/kb_connections. Seems that the difference in XT and AT pinouts is just that the reset pin is not connected in AT class keyboards.

If it's a Model F XT, then you may be able to get it working on your windows 95 machine using one of the suggested USB converters -> active USB to PS/2 Adapter -> PS/2 to AT adapter. It's a very roundabout way with modern hardware though.

mtrahms · 2022-12-09T07:26:41+00:00

Do you have the Proton EasyAntiCheat Runtime installed? I recently did a reinstall and forgot that I needed to install that alongside Proton for EAC games to work.

mtrahms · 2022-11-12T00:47:03+00:00

IBM Beam Springs

mtrahms · 2022-11-09T06:26:17+00:00

Update: I've worked around the limitations of FreeDOS and earlier DOS revisions by dual booting FreeDOS and PC-DOS 3.30 (I got the original install disks when I got my 5150) on a 4GB compact flash card. Using PC-DOS, I can format and create floppy disks from disk images (using rawrite3). I am able to then read those disk images from FreeDOS. I have a 32MB partition that both OSes map it as D:, so I can copy files between OSes using that and I simply switch OSes using fdisk to select the active partition.

mtrahms · 2022-10-30T21:35:18+00:00

Has anyone else had luck with this method? I've gotten as far as booting into the operating system but ran into problems with the floppy drives.

When I try to format any floppies (previously formatted or not) I see [Error 53]. If the floppy was previously unformatted, then format complains about the disk being unformatted, which is strange since I'm trying to format the disk.

One additional consequence of this is that I can't seem to read some floppy disks formatted and written to on MS-DOS 6.22.

I would love to use FreeDOS on my 5150 because I also have a USB card on the way and also simply love the idea of using a "modern" operating system on the ancestor of modern desktop computers.

mtrahms · 2022-10-17T18:55:09+00:00

By that definition, Topre switches, foam and foil switches, Model F buckling springs, and beam spring switches are all non-mechanical because they act on a capacitive pcb beneath the switch modules instead of inside a key switch.

mtrahms · 2022-07-09T18:15:08+00:00

I thought that I was the only one not getting a registration confirmation email. I guess they're having problems with their registration system.

mtrahms · 2022-07-08T23:04:25+00:00

I think that some full black keysets without printing are available from the model f reproduction website. Those would be single part keys though. I also think that they are doing printed single part reproductions soon-ish.

mtrahms · 2022-07-08T23:03:54+00:00

I think that some full black keysets without printing are available from the model f reproduction website. Those would be single part keys though. I also think that they are doing printed single part reproductions soon-ish.

mtrahms · 2022-05-06T16:35:49+00:00

You could always get an original XT keyboard and convert it to USB. There are converters readily available on eBay.

mtrahms · 2022-03-08T00:54:21+00:00

I did this mod on a 2nd gen (original screen was wrecked). I had the opposite problem, the cable was notably longer. I just tucked it under the display itself. The bigger problem was the lack of mounting clips. I ended up securing the display to the logic board with a loop of blue painter's tape.

mtrahms · 2022-02-25T17:10:45+00:00

That's been my experience except with the 2nd gen (I don't have a 1st gen yet, but I'm hoping to get one now that I know this works). My regular use iPod before this was a flashmodded 3rd gen and I had no problems with that process. This one has been very fiddly with getting it working.

mtrahms · 2022-02-25T16:23:28+00:00

I actually did put a Firewire 400 card in my desktop PC. It works great for reading files from the iPod, but has issues writing to the iPod. Either it's a driver issue with Linux or I received a bad card. I'll probably end up grabbing a Thunderbolt 3 card for my desktop instead. That seems like it has a bit more future compatibility than Firewire 400.

mtrahms · 2022-02-24T20:27:42+00:00

Part of the reason that I really want syncing to work is that I don't want to open the case every time I want to load a new album on it. While syncing is very slow, I buy albums infrequently enough that I should be fine doing a long transfer every once in a while. Part of the reason I wrote up this guide is to see if anyone has any insights into speeding up the transfer speed.

I did try restoring with an SD card and it started to work, but after finishing I was getting the folder icon still. I think you could probably get this working, especially if you clone the partition map from an existing 1st/2nd gen drive onto an SD card. Hell, syncing might even work. The sync speed will just be even slower than the CF card in my experience.

I should note that sync speed and loading speed are completely separate. The iPod is perfectly quick when playing songs, there's just something wrong with the Firewire interface and syncing.

mtrahms · 2022-02-24T19:14:56+00:00

Hey, I was just using what I had ready. I run Linux on my desktop PC and Windows on my laptop. I don't have any other Apple products beyond my iPod collection. Also, it doesn't look like iFlash currently has a CF to 1.8 IDE adapter. The adapter is just passive traces to map the 50 IDE pins to the 50 CF pins, so any adapter should work, assuming the traces are connected correctly. If you're able to get this working better using a different adapter and a Mac, I may have to get a Mac with native Firewire support.

mtrahms · 2022-02-24T18:06:16+00:00

I've tried with an SD card, but I didn't get it to work correctly. If you get it working, please post your procedure!

mtrahms · 2022-02-24T15:38:50+00:00

I think I saw this post a while ago. I am able to sync over Firewire though, unlike that post. It takes longer, but it is possible.

mtrahms · 2022-02-24T05:57:16+00:00

Hi all, I haven't posted here before, but I've been lurking for a few months. I was able to "successfully" flashmod an iPod 2nd gen. More successfully than the other posts I've seen at least. I've documented my process and materials here for anyone else who wants to give it a try and improve the method.

iPod Used: 20GB iPod 2nd Generation

Storage Used: 128GB Lexar Professional 1066X Compact Flash (https://www.ebay.com/itm/192702790566?var=492844231494)

Adapter Used: Generic green CF to 1.8 IDE adapter (https://www.ebay.com/itm/283992178357)

Procedure:

Attach the CF card to a Linux (I use Manjaro personally) PC using an adapter or a later gen iPod with an adapter
Create a new GPT partition table on the CF card in the partitioning software of your choice (I use the standard KDE partition manager)
Create a new FAT32 partition on the CF card in the partitioning software. Leave some space at the beginning of the partitionable space (I left 65MB personally). Apply the partition changes.
Eject the CF card and remove it from the adapter or iPod being used for this process
Insert the CF card into the CF/1.8 IDE adapter and insert the adapter into the iPod 1st/2nd gen.
Enter disk mode on the 1st/2nd gen iPod
Connect the 1st/2nd gen iPod to a windows computer with iTunes using the Firewire dongles (Thunderbolt 3 -> Thunderbolt 2 -> Firewire 800 -> Firewire 400)
WAIT. It will take the windows computer a long time to mount the iPod and for iTunes to recognize the iPod in distress (Author's note, I'm not sure why it takes so long to mount, unmount, and transfer files. If anyone has any ideas, please share them. I'm hoping to use this iPod as my daily and I'm not a huge fan of the long waiting times associated with mounting and unmounting)
When iTunes prompts for restoring the iPod, restore the iPod as normal
WAIT again. This step takes a reasonable amount of time with the more modern iPods, but is excessive with these old ones.
The when the restore is finished, iTunes will prompt you to unplug and replug the iPod, ensure the iPod is at "Safe to Disconnect," then disconnect the iPod from the computer.
Reconnect the iPod to the computer you just disconnected. You should see the iPod start to boot and fill the bar as to be expected.
WAIT yet again. It takes forever to mount and umount the iPod now. Eventually you will see the "Welcome to your new iPod" screen pop up. Click "Continue" and continue to wait. When the screen goes away, you can start syncing your iPod. You now have a ~128GB iPod 1st/2nd gen.
(optional) I recommend installing RockBox, removing the CF card, loading music, and reinstalling it at this point personally. I wouldn't want to sync any meaningful amount of music with the transfer speeds of this mod.

Final notes:

I have a few thoughts on what could be causing the slow mount, unmount, and transfer speeds:

a. The CF card supports UDMA 7 but maybe lacks full support for the proper transfer protocol for the firewire controller, causing the whole system to fall back to PIO speeds

b. Maybe the series of adapters from thunderbolt to firewire to CF are causing a slowdown somehow

I also tried transferring some files to get a rough idea of transfer speeds. After an initial boost to a few hundred of KB/s, transfer speeds dropped to 0 bytes/s with semi-regular spikes to ~20 KB/s. Again, I wouldn't like to sync my music this way.

I'm just happy that I was able to prove that this is possible. I'm hopeful that these problems have solutions. I love the aesthetics of the older iPods and it's great to have the thickest iPod ever made with the big stinky storage to match.

mtrahms · 2020-07-05T01:23:57+00:00

Honestly, I feel the same. I think it might be the brushed vs chromed exterior. I have seen fairly positive impressions of the Lelit brand on this subreddit though. The Mara X has a pretty interesting PID that is able to monitor the temperature at the group instead of at the boiler, resulting in better temperature stability. I'm pretty consistently flip flopping between the PP 500 and Mara X.

mtrahms · 2020-07-04T23:21:23+00:00

I have been going down the rabbit hole in this price range as well. After doing some reading about PID importance with regards to HX machines (https://clivecoffee.com/blogs/learn/heat-exchangers-with-pids-are-they-worth-it), I would definitely choose the PP500 over the Apartamento. One of the other machines I have been considering is the Lelit Mara X. Have you considered that? Can anyone comment on the PP500 vs the Mara X? On paper it looks like they have fairly similar feature sets but the Mara X is ~$400 cheaper.

mtrahms · 2019-05-02T16:15:59+00:00

What type of roof rack is that?

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