Unicart64 - The FPGA based cartridge for Commodore 64

Quote from Peto74

Thanks Wolfme !
But, now I'm confusing more and more ... what the hell is this ???
I mean step 3 ???
I will analyse it in the code, red colour is my error "detection". I will update you.

Meantime, pls. start C64 with Run/Stop (KERNAL), step 1,
load some .prg files to SD card (games or so ...)
load SDCMDUC.PRG commander from other disk/tape/sd2iec ...,
start SDCMDUC.PRG
Do you see firmware "UC64190124" on the top-left corner ?
Is there visible also "SD Card: OK" ?
Pls. navigate some .prg/.p00 files and press "Return" key ... it should start it
Is it working ?

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Starting commander from SD2IEC works. FW message top-left is correct, sd-card: OK.
Starting prgs work (and very fast, wow).
Cannot test P00, i have none.

Quote from Peto74

Hmm, it is really no feature, some disturbing of VIC ???Do I have different C64 ???, Meikel has the same problem.

Ah ok. I tested with different C64 all ok. No color change.

Quote from Peto74

Many THANKS !!! Your input is very helpful.
Let's do it step by step ...

Question about booting.
If you plug SD card in and turn on C64 you see "red screen".
Question: is there visible changing colourful strips on BORDER around the Background ?
I expect answer: YES .

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Uh, i think i must disappoint you... no color changing, solid red screen

Quote from Peto74

Hmm, if you press General reset button (left) in this position (red screen), what will happen ?
Note: Pls. use plastic pen, not your fingers

hi Peto

red screen & left reset button = nothing happens

red screen & C64 reset, normal C64 screen, but colourful chars when move over

if i start C64 with Run/Stop, sometimes this screen appears

pressing left reset on C64 start screen, this error appears

hope it helps you to finde the error

yes, exact, reset while red screen results in no reactiom.

with SDCMDUC SD-card works perfecly. I will also try another SD-card.

2 x SanDisk 2GB - not working
1 x SanDisk 32 GB - working, but no autoboot
1 x Verbatim 16 GB - working, but no autoboot

Yes, i can confirm that 1 C64 has color issue, other not.
I tried with different tools, tried to format 4GB sd card with fat16, but autoboot didn't work.

OK, we wait til later...

didn't work...

same here, red Screen

I checked C64 without color issue: VIC 6569R3
Other C64 with issue i cannot check, because VIC is shielded completly. No chance to look at it.

Hi, my board has also arrived.
Thanks a lot

I have tested it with two C64, the sd card was a Sandisk Ultra 16 GB Fat 32 with a lot of stuff from my sd2iec.

1. Assy 250407, Vic ?

1.1 Run/Stop is working (sometimes not, but that could by the keyboard)
1.2.Setboot shows green color, ok with firmware number
1.3 does not boot (completely red screen, did not tested any buttons)
1.4 prg-Files starts normally from commander started from disc

2. Assy 250469, Vic 8565R2

2.1 Run/Stop is working
2.2.Setboot shows green color, ok with firmware number
2.3 does boot
2.4 prg-Files starts from commander, did not check the flash-function yet

When I start with kernal (both assy's), load directory from disk and then scroll over some chars, they turn black (from white)

ASSY 250 469, VIC 8565R2
Tested with a SanDisk Ultra 32GB SDHC

1) Run/Stop key is working (boots normal kernal)
2) setboot.prg shows green
3) c64-boot.prg boots without problems
4) .prg files start fine from commander

i can´t see any color-issues...

One small issue: when I browse files with the commander with the up/down key, it sometimes jumps several rows up/down instead of one