Search found 7 matches

by mamejay
Sat Mar 23, 2019 3:19 pm
Forum: Hardware and Tech
Topic: Possible to run Kernel rom externally in a cart?
Replies: 5
Views: 4560

Re: Possible to run Kernel rom externally in a cart?

Thats a shame. How is the Penultimate cart doing it with the Dead Test kernel?
by mamejay
Fri Mar 22, 2019 4:28 am
Forum: Hardware and Tech
Topic: Possible to run Kernel rom externally in a cart?
Replies: 5
Views: 4560

Possible to run Kernel rom externally in a cart?

I know this may be a silly question but would it be possible to run an external kernel like JiffyDos VIA the cartridge port?
by mamejay
Wed Feb 27, 2019 12:42 am
Forum: Programming
Topic: 320x200 - a CGA emulator for VIC-20! (+35K RAM req'd)
Replies: 13
Views: 9237

Re: 320x200 - a CGA emulator for VIC-20! (+35K RAM req'd)

Hi Mike, OK did more tests. Thanks for the heads up about naming the files correctly. I created a D64 image that did not have SEQ extension. I just moved the files to a folder and not in a D64 image and it loaded perfectly VIA the SD2IEC. Excellent my ram expansion is working. Thanks for the great t...
by mamejay
Tue Feb 26, 2019 4:24 pm
Forum: Programming
Topic: 320x200 - a CGA emulator for VIC-20! (+35K RAM req'd)
Replies: 13
Views: 9237

Re: 320x200 - a CGA emulator for VIC-20! (+35K RAM req'd)

Hi Mike, Basically I run your program and select the image file. After sometime I am throw back out to basic with a flashing cursor. At the moment I have all dip switches enabled except for the write-protect switch. I tested your program in VICE and all is working as expected. I will give it another...
by mamejay
Tue Feb 26, 2019 6:17 am
Forum: Programming
Topic: 320x200 - a CGA emulator for VIC-20! (+35K RAM req'd)
Replies: 13
Views: 9237

Re: 320x200 - a CGA emulator for VIC-20! (+35K RAM req'd)

Hi Mike, I have built Ruud's 35k RAM expansion and have been doing some testing. I can't seem to get the 320x200 to work. I have run your memory test program and the initial tests with all banks on is showing ram in all locations. Should your program work with Ruud's memory expansion? http://www.bal...
by mamejay
Thu Jan 10, 2019 12:21 am
Forum: Hardware and Tech
Topic: 32k Ram expansion and write-enabled
Replies: 3
Views: 4736

Re: 32k Ram expansion and write-enabled

Yes I have seen this one. On the schematic can you tell me what RN1 is? I suspect its a resistor ladder. Just need to know the value if it.
by mamejay
Tue Jan 08, 2019 7:11 pm
Forum: Hardware and Tech
Topic: 32k Ram expansion and write-enabled
Replies: 3
Views: 4736

32k Ram expansion and write-enabled

Hello everyone, First post so be kind. I have recently got my hands on a VIC and wanted to make up a memory expansion. I created a PCB working off the following document ftp://www.zimmers.net/pub/cbm/documents/projects/memory/vic20/32kB.html I can see the full memory available and it does work to an...