On page 7 of the 1.4 and 1.5 documentation, in the section titled "4.4. Example III", I believe there is a typo on the first row of the table. The neutron.crt file reports exrom: 0 game: 0 (16k Game), and I think 0 (=LOK) is supposed to be 0 (=LOW). Also, I think the Setting column for !GAME is supposed to be SW1-1 = ON instead. I tested this with doccosmos.crt, which reports the same information as the neutron.crt example in the documentation, and having SW1-1 set to ON worked perfectly.

(P.S. Great work on this pcb! It's so compact and well documented. I went from not knowing anything about C64 cartridges to building my own cart and flashing the ROM chips within a couple of hours!)

I couldn't find any 27C64's like the guide recommends for a Dead Test Cart so I programmed it into the lower 8K of a 27C256 and zeroed the rest. I followed the guide, jumping JP3, JP4, and JP6. It doesn't seem to be working. Any ideas why? Are there any solutions that don't involve reprogramming the chip? It's already soldered in (unsocketed) and I don't really want to have to desolder it. Hope you can help. If there's a better place for support requests please let me know.

Question: why the switch from KiCad to Eagle ?

It would seem more logical to have an open project like this supported by an open program as KiCad - than a proprietary program as Eagle

I made a BOM on octopart for this https://octopart.com/bom-tool/bEfXBXH2

Hi,
it's not a big deal, but adding that info to the manual would help others. I waste some time using a few bad methods before finding good one.

Simplest working method in Windows:

1. open cmd in folder containing bin files,
2. use command form merging binary files files into new one:
   copy /b file_1.bin + file_2.bin + ... + file_n.bin output_file.bin
   eg.
   copy /b DeadTest.bin + jupiterl.bin + SomeGame.bin combined.bin
   or
   copy /b DeadtTest.bin + jupiterl.bin combined.bin

This for sure won't work: copy-paste in Hex-editor plugin of Notepad++

I have made small mods to V1.4 dessign, really don't know the exact differences with v1.4

• Added a SP3T slide swith for J6 (very usefull for mounting inside a cartridge case). Do not use switch and pin headers at same time, use only one.
• Removed all the vias near the edge connector, this allow the PCB to be manufactured using GOLD ENIG "gold fingers".
• Increased diameter on vias holes to 0.5mm to be compatible with PCBs manufacturers.
• Increased also some layers width.
  Versa64Cart_v1_5.zip
  
  

Suggestion: holes for angled reset button

IC1 is too close to the right edge and hits resting-post on original cart and retro innovations cart.

retroinnovation cart. similar:

This was a problem in Simple64cart too.

Versa64Cart v1.1 has the ic1 (U1 v1.1) about 1mm further to the left.

Gerbers are wrong in dir gerbers and the gerbers.zip file

Issue regarding Versa64cart v1.1 and v1.2

sharewareplus cart enclosure hits the diode

The sharewareplus cartridge enclosure beam near the pcb edge fingers rest on top of the diodes.
http://sharewareplus.blogspot.com/

tfw8bit stumpy 1mm narrower

The stumpy cart dimensions is different to Commodore. It is only a millimeter or so it should be easy to modify the pcb to fit all the carts out there.
https://www.thefuturewas8bit.com/shop/commodore/c64romcart.html

retro innovations enclosure: jumpers hits roof

Currently, I've only tested the cartridge with cartriges from retro innovation. The jumpers hit the top enclosure wall. Might aswell be a problem in other carts
http://store.go4retro.com/categories/Commodore/Hardware/

Hi,

Bomberland is not available for order any more, but the 64k crt is freely downloadable at the bottom of the linked webpage. It should fit in a 27C512 but the Versa64Cart manual only lists 8k and 16k configurations. Would this work with Versa64Cart?

cartconv -f bomberland.crt
CRT Version: 1.0
Name: VICE CART
Hardware ID: 19 (Magic Desk)
Mode: exrom: 0 game: 1 (8k Game)

offset  sig  type  bank start size  chunklen
$000040 CHIP ROM   #000 $8000 $2000 $2010
$002050 CHIP ROM   #001 $8000 $2000 $2010
$004060 CHIP ROM   #002 $8000 $2000 $2010
$006070 CHIP ROM   #003 $8000 $2000 $2010
$008080 CHIP ROM   #004 $8000 $2000 $2010
$00a090 CHIP ROM   #005 $8000 $2000 $2010
$00c0a0 CHIP ROM   #006 $8000 $2000 $2010
$00e0b0 CHIP ROM   #007 $8000 $2000 $2010

total banks: 8 size: $010000

Hi Bwack.
I just saw your Versacart and it looks like a great piece of work! I understand it can hold up to 8 programs , each 8kb in a 512 eprom and each of the 8kb can be selected by changing the dipswitches. Perhaps a stupid question but I was wondering: can the Versacart be used to switch between kernelroms as well? So 8 different kernals in a 512 KB eprom and switch between Them by changing the dipswitches?
Best regards,
Bram.

I tried making a merge request, but alas I didn't know how to do that.

I've fixed some typos on page 7 in the documentation of v1.4
https://github.com/tomse/Versa64Cart/tree/master/v1.4
the PDF is updated, and added the fix as doc 1.4b

cheers

Just wanted to know your opinion about replacing the DIP switch at SW1 and the solder blobs at GAME/EXROM/A13/A14/A15 by standard 2.54mm pitch pins as found in ROMH/ROML in order to a) some sellers might not have that specific 5-bit DIP switch in stock and b) 100% solder-less configuration using standard jumpers.

Thanks.

I'm curious if there is a way to use a 28C64 EEPROM in this instead of a 27C64, as I have a ton of them. I have tried, but I just get a black screen. It looked like the 28C64 was pin compatible, so I was thinking this is strange. Anyways, thank you for the project!