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by Mike
Sat Aug 19, 2017 2:03 pm
Forum: Buy, Sell, and Trade
Topic: For sale - vc 20 - German made ntsc
Replies: 1
Views: 20

Re: For sale - vc 20 - German made ntsc

We had a similar find here in Denial roughly one year ago, in the thread 'NTSC VC20 ???'.

The consensus being, those were probably test machines or intended for purchase by US-American military personnel (who might have brought NTSC TV sets to Germany).
by Mike
Sat Aug 19, 2017 10:30 am
Forum: Programming
Topic: Raster split and $9002
Replies: 18
Views: 192

Re: Raster split and $9002

I'll only have the opportunity to test on my VIC-20 during next week.

Nonetheless, is there now a difference between VIC-20 and VICE, or did you just place the text so far in the overscan area that you just couldn't see it on real hardware with CRT?
by Mike
Sat Aug 19, 2017 6:43 am
Forum: Programming
Topic: Raster split and $9002
Replies: 18
Views: 192

Re: Raster split and $9002

If you can construct a minimal test case, which shows the difference between real h/w and current build of VICE, just file a bug report in the bug tracker of VICE.
by Mike
Sat Aug 19, 2017 2:03 am
Forum: General Topics
Topic: GandALF, substitute for the MOS 325572-01
Replies: 46
Views: 626

Re: GandALF, substitute for the MOS 325572-01

I do not own a 1541, nor do I plan to buy one for any forseeable time, so I am not 'in the market' for a MOS 325572-01 IC or substitute anyhow. However, there is a point to be noted in groepaz' posts, in conjunction what has been told about the substitute by the OP and by the testimony of Mr. Carlse...
by Mike
Fri Aug 18, 2017 2:57 am
Forum: Programming
Topic: Sega Light Phaser
Replies: 7
Views: 227

Re: Sega Light Phaser

The pinout of the Sega Light Phaser is found here: http://segaretro.org/Light_Phaser On the VIC-20 the pinout of the joystick port is different (as seen onto the computer port): Joystick port - VIC-20 1 2 3 4 5 o o o o o o o o o 6 7 8 9 1 UP 2 DOWN 3 LEFT 4 RIGHT 5 POT Y 6 FIRE/LIGHTPEN 7 +5V 8 GND ...
by Mike
Wed Aug 16, 2017 12:48 am
Forum: Games
Topic: Scott Adams cart images
Replies: 11
Views: 112

Re: Scott Adams cart images

is there is a canonical list of useful SYS entry points somewhere? The pinned thread ' ROM calls and other tricks ' in the Programming section is a good starting point for sure, even if it's nowhere near an exhaustive list. In the boot loader above, SYS57809 scans the following BASIC program for th...
by Mike
Tue Aug 15, 2017 3:39 pm
Forum: Games
Topic: Scott Adams cart images
Replies: 11
Views: 112

Re: Scott Adams cart images

I guess it should be possible to write a little pre-loader to move screen memory, move BASIC and then chain my main loader program. I'll play with it when I get a chance later ... The only thing really necessary is to move the screen buffer to the position where it resides with an unexpanded VIC-20...
by Mike
Tue Aug 15, 2017 8:18 am
Forum: Games
Topic: Scott Adams cart images
Replies: 11
Views: 112

Re: Scott Adams cart images

Then it occurred to me that perhaps the Scott Adams games expect the screen memory to be in the normal (unexpanded, +3K) place or they act weird? This. The games store internal data at $1000 and following, consequently screen output to a screen buffer located at $1000 (as it is with RAM in BLK 1) w...
by Mike
Tue Aug 15, 2017 5:31 am
Forum: Programming
Topic: Software sprites?
Replies: 155
Views: 47394

Re: Software sprites?

beamrider wrote:'c' [...] 'c' [...] 'c' [...] 'c'

Just curious: is there a specific reason you insist on this spelling of C (other than, possibly, that cc65 doesn't implement the full language)?
by Mike
Tue Aug 15, 2017 2:46 am
Forum: Games
Topic: In the making: Arukanoido – an Arkanoid clone
Replies: 265
Views: 11107

Re: In the making: Arukanoido – an Arkanoid clone

No point patching a program to work with a defective emulator. Please try out your Power20 with this simple BASIC program. It reads out the joystick with essentially the same method as shown in the WIKI , just it uses 37137 (=$9111) instead of the more easier to remember 37151 (both registers work o...
by Mike
Mon Aug 14, 2017 11:27 am
Forum: General Topics
Topic: Where's the latest file browser?
Replies: 2
Views: 94

Re: Where's the latest file browser?

I recovered V1.6 (which is the latest I know) with archive.org - anyhow, I've mirrored the *.zip file:

CBM-FileBrowser V1.6

Greetings,

Michael
by Mike
Wed May 24, 2017 4:11 am
Forum: Collecting and History
Topic: Request for a *good* scan of Home Computing Weekly #20 ...
Replies: 11
Views: 415

Re: Request for a *good* scan of Home Computing Weekly #20 ...

I disagree, I pointed out that it was possible to zoom in and read the text. You got it wrong by exporting. You argued against it in your first post with an export image then half corrected yourself but were ungracious in your next reply. Please and thank you works well to get someone to do you a f...
by Mike
Wed May 24, 2017 3:03 am
Forum: Collecting and History
Topic: Request for a *good* scan of Home Computing Weekly #20 ...
Replies: 11
Views: 415

Re: Request for a *good* scan of Home Computing Weekly #20 ...

Vic20-Ian, I'm asking for a reasonable favour, not especially on my behalf, but to get things going about somebody else's problem. That favour could be done in a 5 minutes work scanning and uploading the scan at some place. I'd reciprocate with type-in work, a functioning program and when I get the ...
by Mike
Tue May 23, 2017 7:17 am
Forum: Collecting and History
Topic: Request for a *good* scan of Home Computing Weekly #20 ...
Replies: 11
Views: 415

Re: Request for a *good* scan of Home Computing Weekly #20 ...

Those two pages are the same 'quality' I got from the view function in archive.org. The scan is 970x1392 pixels, which correspond to roughly 120 dpi - and from the looks it's most probably interpolated from 60 dpi. If someone wants to ruin his eyes on this, go ahead. Not me. And I am not going to co...
by Mike
Tue May 23, 2017 6:34 am
Forum: Collecting and History
Topic: Request for a *good* scan of Home Computing Weekly #20 ...
Replies: 11
Views: 415

Re: Request for a *good* scan of Home Computing Weekly #20 ...

As follow-up: the viewer in archive.org gives a slightly better result - somehow the export function wrecks the rest of readability:

not_quite_as_worse.png

Still not anything I'd want to stress my eyes with over a substantial amount of time. :|

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