Does Pi1541 run with a VIC-20? (split/OT from: SD2IEC and Penultimate [...])

[Kakemoms]

Hi

I tried to put together a pi1541, but it did not work with the Vic-20 (at least the one I tested it with). I haven't found that I did anything wrong.

Anyone else here had any luck with a pi1541 and Vic20?

[mrr19121970]

Yes, I have one and have no issues with it.

[beamrider]

I don't think true compatibility matters so much with the Vic as I don't know of any software that needs it.

[majikeyric]

I have one also and it works very well.

I don't think true compatibility matters so much with the Vic as I don't know of any software that needs it.

indeed, just a handful of demos.

The SD2IEC is more suitable for the VIC20 I think.

[Mike]

Several demos with custom fast loader and stand-alone drive speeders spring to my mind here:

o Veni, Vidi, VIC!,

o Robotic Liberation,

o Back in the Good Old Days,

o Ancient School,

o GNORK!,

o HYPRA SYSTEM.

These all won't work with a SD2IEC but should work with a Pi1541.

[majikeyric]

All the demos I own requiring true 1541 emulation:

unexpanded:

Code: Select all

A New Moon-K2.d64
Back In Good Old Days-Cncd.d64
Future 1999-Pwp.d64
Impossiblator3-Pwp.d64
lut-Pwp.d64
OMD_Delux-Orb.d64
Out Of Beer-Dkd.d64
Robot Liberation(Unex)-Pwp.d64
The Next Level-Pwp.d64
Vicious-Dkd.d64
victoria-Dkd.d64
Vicual Mmix-Pu239.d64
Vimm2-Pu239.d64

>=8k:

Code: Select all

Ancient School-Noice.d64
gnork_dsr.d64
Vendi_Ntsc.d64
Vendi_Pal.d64
Vimm-Pu239.d64

[Mike]

@majikeyric: I'm not quite sure about the OMD ORB Megademo. When I compiled my smaller list, I could get it to run with VDrive in VICE, so that strongly indicates it should also run with a SD2IEC (but I will have to try out). (At least) Ancient School and Gnork! need +16K.

[majikeyric]

what is VDrive ?

[Mike]

what is VDrive ?

True Drive Emulation OFF and Virtual device traps ON in VICE.

What then accesses disk images, or PC directories as mounted 'disks', is VICE VDrive:

[bills442]

Hello.

I too am curious if the pi1541 works with the vic20. I ordered a PCB kit from ebay and built my own. I can certainly post all the gory details, but will be brief here, curious if anyone has any suggestions for troubleshooting. I understand I should probably reach out on lemon64 as that is where most of the gurus hang out for this device including the developer.

The pcb I have is what they refer to as "option B". It has a built in level converter, and a separate driver chip for the IEC bus so that it can source/sink enough current to be in a daisy chain. I've checked power supply and wiring. All are in spec.

The "browse" mode works fine. I can save and load programs from my vic20. The "emulation" does not. I've tried both 1540 and 1541 roms. My $64 dollar question is: Can one assume if the browse mode works that the hardware is correct? This is the assumption I would make. I have a logic analyzer and I could record the signals if needed.

[update]
Here's an update after a great deal of struggling. It seems something has changed around the 1.20 pi1541 kernel version. 1.20 works, > 1.20 does not with the vic20. The 1540 rom doesn't work in any config that I've found.

[girv]

FWIW, the 1.23 firmware release notes state compatiblity has been improved and now works on many more combinations of hardware including VIC20.

With the help of a lot of testers I was able to update the timings to a state where compatability is increased for all combinations of;-
A/B hardware set ups.
NTSC vs PAL
Pi0, 1, 3B, 3A and 3B+
C64, Vic20, Plus4, C128
1541 and 1581 modes

I'm hoping to build a PiZero based 1541 but haven't got there yet.

[desiv]

I have a breadbord based Pi1541 running an a Pi0 currently.
Working great.
I need to print my case and solder it up for a more permanent install.

[Brad]

I’ll add that my pi1541 that I built for my c64 works fine with my vic also.