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Forums > CSDb Discussions > 1541 clones benchmark
2019-01-24 14:21

Registered: Jan 2018
Posts: 130
1541 clones benchmark

I recently bought this 1541 clone drive, not sure what model it is because it didn't arrive yet. I wanted to check how compatible it is with a real 1541. Do you have any tests or maybe demos that only work on a real 1541 ?

2019-01-24 15:11

Registered: Jan 2003
Posts: 355
I'd start with the Top10 Demos on here (look at the right side bar) and if those work, then I'd say its compatibility is good enough.
2019-01-24 15:17

Registered: Dec 2001
Posts: 9021
or run the test progs from here: https://sourceforge.net/p/vice-emu/code/HEAD/tree/testprogs/dri..

as for testing with demos, especially "modern" ones - no, not good testcases :) original games from ~1986 (vmax, timex, rapdilock etc) are more demanding and will more likely show compatibility issues.
2019-01-24 18:45

Registered: Jan 2018
Posts: 130
Well, I got the drive in the mail today. Even came with a bunch of disks, maybe there'll be something worth dumping here. Seems like polish (or translated) games.
I ran Reflex - Access Denied on it and it works fine. The drive is much smaller and in metal case, so it's cool :D There's no stickers on the drive anywhere, maybe the previous owner got rid of them. Only the power brick says Oceanic. After googling I see there's an Oceaning OC-118 and it looks exactly like mine. From the c64-wiki (and google translate)
It is housed in an elegant and much narrower & shallower housing than even the 1541-II. The compatibility with the Commodore drives is very high, but not 100% - the 1541-II anti-copy protection measures (like Caveman Ugh-Lympics) are not able to do that. For the general access times are slightly faster than the 1541-II, and according to the manufacturer, even 30% faster than the 1541th

So it's not 100% compatible, but if it runs all the demos I want it's good enough for me. I hope it does because it looks great.
2019-01-24 18:50

Registered: Dec 2001
Posts: 9021
oceanic is a nice drive, it will work fine for most things - except a bunch of original games
2019-01-24 19:21

Registered: Dec 2001
Posts: 952
I had an Excelerator+ back in the day, which is the same drive as the Oceanic OC-118N. Depending on whether the drive was sold before or after Commodore sued them for copying the 1541 ROMs, it can come with JiffyDOS instead — those are the ones that are "30% faster". Compatibility is as good as it gets for a 3rd party drive.

Has anyone dumped the ROMs of the various Oceanic and Excelerator drives?
2019-01-25 18:24

Registered: Apr 2005
Posts: 28
Golera, the OC-118N is a hard working girl. We have done two massive sessions of mass copying on a parallelized one with a REU and 256KB Copy, doing 7000 disk sides or so for a local distributor. That drive is still working quite OK for most stuff, and that convinced me to buy another, "like-new" condition OC-118N as well.
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