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hello im really big fan on the Commodore 64 but I was wondering did they made LT. Kernel Hard drive for that too its has 20 megabyte

thanks for the vid I subbed and wish you good luck from another youtuber

Now, THAT's what I call a clear and good explanation! Thanks!

Did the Epyx Fastload code need to be read first for every file operation, or was it done just once, the first time the 1541 was used after a power cycle?

Great video! Glad you presented an obscure part of micro history. I have recently repaired my Superpet and now have OS-9 running again using the original TPUG board.

That was impressive! I came along by chance, as I was curious to watch a video about how the KIM-1 worked, as I was curious if a KIM-1 emulator could run on the MEGA65 one day, and be a way for me to explore this ecosystem further. Your video was the first one I hit, enjoyed it a lot, and I like that technique you had to solder the IEC cables pins onto an IC socket and plug it into your breadboard, I never tried that before, very neat :) Also amazing the effort you took to document the entire journey, walking through schematic diagrams, how you placed wiring on your breadboards, walkthrough of the software. Thank you for sharing so much of your journey :)

Subscribed! Thank you for this and your other vids

EPYX fast cartridge? No mention of it in this video. I had one.. It cut the load speeds to a fraction of the time it would normally load an Electronic Arts Original game... No BS

Very cool!! The KIM-1 has always fascinated me. I would have been 12 y/o when it came out. Wish I could have gotten into computers at that age!! I was 18 when I bought my first computer, a TRS-80 Color Computer w/ 4K ram. Liked and subscribed -- keep the KIM-1 videos coming!

If you check the source files for the SD2IEC you will find explanations of how many Fast loader protocols, including Fast Load! Also a KungFu Flash and other loadable multi carts are fantastic for testing Fastloaders.

Hi there. I'm not a PET guy or a 6502 guy but I am an 8-bit guy and a disassembler guy and a retrocomputing guy (-: Are there any ways to tell if a .PRG file is for PET, VIC-20, or C64, or probably also C16 & Plus4? Do .PRG files always contain BASIC like this one or do they sometimes contain just machine code?

At the end is a good explanation as to why commodore created a slow and reliable serial bus protocol on their original c64 hardware but it really boggles the mind why they didn't update the serial bus to use something like fastload when they re-released the c64 and 1541 drives many years after the initial release.. having a drive that was greater than 5x faster would have been a major selling point for almost zero additional cost.

I love videos like this. They help me learn more about the computer I used and loved in the 80's. At least till I got to mess with a relative's Mac Plus.

Excellent video and work!! Where can I find information on the switch settings and these languages

Wait! 2.5min for 15k write? That is compared to. MSX TAPE recotder at 2400 baudios!. It did less than 5 min for 16k module at 1200 baudios. And less than 2.5m at 2400 baudios. Because an msx readion 16k from disk is about 8 SECONDS.

Incredible video and super well done, thanks

Way above my head. Maybe sometime I will understand more. Very interesting.

You can also do this with a 1541.

The most amazing thing about this whole story is how successful the c64 was in spite of its numerous bugs that had real world effects that users had to deal with constantly.

Nice, if only I had this video about 2 years ago. :) Interesting, I too used the Mean Well power supply. Yes, it's simpler using a 555 timer, instead of supplying 60hz signal with additional transformer & logic.

Dude mang. I'm an intellectual but THE coolest ______ one you couldn't even fathom. I tell that so you can possibly take a quick word from me, in the correct manner. I dig your shirts and overal meaning, as I put 2 and 2 together to get the whole story. I'm good like that I commend you as a "friend" in computer world. My interest is in the word "person" on your shirt. Yes, yes I know you are being regular about it and that's my favorite way of all. The word itself, however, does mean "fake" as in persona. It goes back to ancient - well, hundreds of years ago surely and more than that, who knows? - it means wearing a mask in like a stage play and being fake. This is why I dropped the word from my lexicon unless for the ones that truly deserve the moniker. I tell in the interest of "the more you know" and most definitely not to be a downer. I EXTREMELY like your shirt's meaning the way YOU intended it. Rock on!

Thanks for the video, a lot of time and work put into it. Can you use the same Flash 1541 on the SX-64? I have all my old equipment but not the room to enjoy them. My SX-64 is here but the software was packed away by the insurance company. The a long story there. I still not in my own place. Caring for someone else. But watching your video gives me flash backs to my younger days. At C.O.M.P. Computer Operators of Marysville and Port Huron. The 80's were a lot of fun. Did the 8-bit and Amiga computers back in the days.

I have a nicely organized list of 6502 Opcodes, that you can use to memorize all the Opcodes. There is a pattern although it is not always clear. drive.google.com/file/d/1stT1klHHyHeuhXuHmm77puHzOgLKEF2Q/view?usp=drive_link Love your AWESOME collection of Commodore PETs !!!

Very nice and thorough explanation! I appreciate the work you put into your videos and your level of knowledge.

I've benchmarked drives and fastloaders myself, and I'm not sure why you're making it more complicated than it needs to be. Just load the file you created using BASIC's LOAD command, and start timing it from when it says "LOADING" instead of "SEARCHING FOR", since the latter can vary and does not represent the actual data transfer speed. You don't need to change BASIC memory pointers, either. Just load the file somewhere harmless, and time it. You're not trying to make something run with BASIC, so who cares about BASIC's pointers? We just need to know how long it took.

I had a Fastload in the late 80s. It was a game changer.

I was living in Berkeley, CA during college years and met Bryce Nesbitt (inventor of 1541 Flash!, he later went on to work at Commodore and the Amiga) and Bob Skyles at a Commodore Users group which took place at the Lawrence Hall of Science. I bought one that evening. Bryce was over my place a few times and gave me a custom ROM for my 64, and an assembler that he ended up wiring (which smoked the Commodore Macro assembler that I had been using). Skyles later went on to develop QuickSilver, an IEEE cartridge port interface that I used with an SFD-1001 that was purchased from "Protecto Enterprises" when they were blowing them out. Thank you for that reminder and kudos for a great video series.

Great presentation! JiffyDos Next?

I love this. Especially the sound effects. Sound effects make everything better. In real life too. :)

A location of rich history and sad to see it in such disrepair.

Why could it not have used the INTEL 8251 UART which supports 8bit, 1 start bit 1.5 stop bits and can operate at 1152000 bits per sec

Are you kidding me? All the hassle for an lousy improvement from 4:15 to 3:15 in laoding time? Go home! Any software based speed loader is WAY faster and needs no hardware modification!

When I used the Commodore 64 with the 1541 as a kid, I always had the Epyx Fast Load Cartridge. I still use them today. Just press Run/Stop and the Commodore Key, and the disks load a lot faster. I guess a 2 minute load becomes 10 to 15 seconds.

Doesn't the C128 derive its TOD clock similarly to the C64, from the grid frequency? If so, a miniature transformer and half-wave rectifier would also do the trick. AFAIK the 64 doesn't need the clock for much and would mostly be fully DC operable with relatively minor mods, save for some expansions that may want to derive special voltages form the 9VAC. For another thing, I have been wondering if there is any way to track the vertical blanking of the VIC by hardware as an alternate source for a clock pulse.

Hi Commodore History, you have a fantastic channel here with great content. I have been intrigued by the B-256 for many years. I have one of the original C= 8088 boards (I believe there is only a small number in existence), yet I am still to get a B series computer itself. Such an intriguing computer with it's 8088 board, MS-DOS and CP/M-86. Keep the fantastic Commodore 8-bit content coming! Subscribed 👍👍👍

Thank you very much for posting this video. There seems to be very little information on the Internet about how it works in detail - reading the SD2IEC project code helps but that doesn't explain what's going on. Fortunate timing-wise for me as well, I bought an Epyx Fastload cartridge about the same time as this video was posted. I was hoping I could get it to work with an Arduino/PC loader program I've been working on (like a simpler SD2IEC but no SD card, uses serial port instead). Your video has been a great help in getting this to work, probably wouldn't have happened otherwise. Many thanks 😊

Where can that source code be obtained, if possible?

4:34 Get Busy Living! Keep the faith! More software should have little sayings like a Bronners Soap label

Hmm, has anyone replaced the rom chip on the c64 1541 to just include the dos code from the fast loader so that you can get even faster speeds by not having to upload the commands every time?

cool video, indeed nifty and fancy put together!

29:25 💨

What? You drill a hole in the case like you're a caveman from the stone age? You could have just 3d printed an adaptor fitting for the existing holes. This is totally irresponsible to destroy original Commodore hardware.

There was no need to drill through the label. Three standoffs would have been enough. You can attach a little block of rubber under the unsupported corner, for peace of mind.

Love your work! Was wondering if that clock gen board design was available? I'd like to get a few of those made up

Hi, 3D printing an adapter frame would have been an idea to prevent drilling into the PSU case. This little clock generator is a neat thing, almost built my own C64 PSU, without 9VAC, and would have needed such a thing, ended with not building it that way :) Another topic, about these 9VAC, a Plus4 also has this psu like the C64, but looking into the schematics revealed that it does not actually need the 9VAC, and my Plus4 is working just fine since weeks with just 5VDC, so a tapedrive would not work, but I don't have one anyways. kbye

This "slower to load than stock" thing also affected some game collections on tape. A good example is the Cascade 50... it could have been done much wiser. It had the turbo loader written to the tape for each game with the trbo data following it. -For a good few games it would have been way faster to save the game with stock protocol -It might have been even faster to store the turbo loader twice on each side of the tape, so there will be backup for a corrupt part, but then have multiple games stored sequentially with their turbo data only. Of course this would have required file names to be stored in the turbo data, which would have been closer to how TurboTape etc worked. -One extremely unsettling thing with Cascade 50 was that despite the turbo you would wait several minutes staring at the light blue screen with no clue if anything was actually loading. No alternating color bars, no progress indicator of any kind.

Great little update, and thanks for the shout out. It was great to meet in person and get to hang out for a while Dave. :-)

That was a nice idea and well explained. I really liked Wizard of Wor on the C64 back then a lot. And now that I know the Arcade version I must say it's a really well done port! Btw, comment 64 yey =D

It's a 154I drive, not 1541. People make this easy mistake all the time. It's not a 1 at the end. Look closer. It's pronounced the "one fifty four I" drive. C64... One-54. I think the I stood for "interconnected" but not 100% on that.

Great. As a subscriber of your RUclips channel, I hope you drop us a note here as well as sson as the material is online - Twitter and Facebook won't have me.