Search found 2810 matches

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: 464

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. :|
by Mike
Tue May 23, 2017 6:21 am
Forum: Collecting and History
Topic: Request for a *good* scan of Home Computing Weekly #20 ...
Replies: 11
Views: 464

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

This is how a zoomed view of the mentioned *.pdf displays on two different computers I use:

pixel_junk.png

So - either you have access to a different *.pdf, or we don't share the same judgement about the readability of the listing. :(
by Mike
Tue May 23, 2017 1:14 am
Forum: Collecting and History
Topic: Request for a *good* scan of Home Computing Weekly #20 ...
Replies: 11
Views: 464

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

In the sense of the sub-title of this section, "History and Preservation Issues": http://www.sleepingelephant.com/ipw-web/bulletin/bb/viewtopic.php?t=8506&start=18 ... in the quest of reconstructing the program "Mazes make the game... here's how to construct them". There's a ...
by Mike
Tue May 23, 2017 12:57 am
Forum: Emulation and Cross Development
Topic: Super Expander
Replies: 27
Views: 769

Re: Super Expander

Richard sent me a version of the program that had been typed in, however with the difficulty in reading the scan it had many errors and they were what I was trying to work out using CBM Prg Studio. Regardless whether the original typist used the scan, or had the paper copy available and "just&...
by Mike
Mon May 22, 2017 2:43 pm
Forum: Emulation and Cross Development
Topic: Super Expander
Replies: 27
Views: 769

Re: Super Expander

The text is really small and the scan is low resolution. Beyond hope, actually. It's impossible to type in the program from this scan. Might be sensible to post a request for a better scan in the "Collecting and History" section in the hope a Denial member has access to a paper copy of th...
by Mike
Mon May 22, 2017 6:01 am
Forum: Programming
Topic: Counting "trick"/memory copy
Replies: 2
Views: 184

Re: Counting "trick"/memory copy

Usually, copy routines on the 65xx with LDA/STA (),Y modify Y with INY/DEY instead of doing a costly INC/DEC on the low-byte ZP address base. That way, the fix-up of the high-byte only needs to be done on over-/underflow of Y, simultaneously for both src and dst pointers, and doesn't require indepen...
by Mike
Mon May 22, 2017 4:45 am
Forum: Emulation and Cross Development
Topic: Super Expander
Replies: 27
Views: 769

Re: Super Expander

If you provide a (link to the) scan, I can take a look at it.
by Mike
Sat May 20, 2017 3:19 am
Forum: Hardware and Tech
Topic: SuperCPU for the Vic-20
Replies: 75
Views: 3026

Re: SuperCPU for the Vic-20

pixel wrote:Oops. Sorry. Thank you for elaborating.

Just think about the VIC-20 being an intelligent graphics adapter for the external CPU. ;)
by Mike
Sat May 20, 2017 2:49 am
Forum: Hardware and Tech
Topic: SuperCPU for the Vic-20
Replies: 75
Views: 3026

Re: SuperCPU for the Vic-20

If I hadn't had so much on my plate already (Arukanoido, Ultimem, tapesondemand.com, etc.) I'd jump right in. That copying loop is really refreshingly clever but let's talk applications. Moving memory that way is still spoiling the fun. Any chance to wedge in hardware copy? EDIT: Even if it was onl...
by Mike
Wed May 17, 2017 8:32 am
Forum: Hardware and Tech
Topic: SuperCPU for the Vic-20
Replies: 75
Views: 3026

Re: SuperCPU for the Vic-20

Schlowski wrote:No wishful thinking on my side, I simply wanted to clarify that Eslapions 4K dual port SRAM would mean a mainboard modification which is not part of this project. Maybe my wording wasn't clear enough...

Hi, Björg - Du warst damit auch nicht gemeint. ;)
by Mike
Wed May 17, 2017 8:23 am
Forum: Hardware and Tech
Topic: SuperCPU for the Vic-20
Replies: 75
Views: 3026

Re: SuperCPU for the Vic-20

The internal RAM ($0000..$03FF, $1000..$1FFF) is not accessible from the expansion port, for the same reasons the VIC chip cannot access anything at the expansion port. The details of this have been discussed here in Denial often enough, no amount of wishful thinking is going to change that. A Super...
by Mike
Fri May 12, 2017 6:22 am
Forum: Emulation and Cross Development
Topic: Super Expander
Replies: 27
Views: 769

Re: Super Expander

It would be nice to see your graphics routines as an expansion. MINIGRAFIK works fine as is, and I have no plans to change its distribution form. For smaller client programs that use MG, and during their development and tests, it's entirely sufficient to load and run the MG executable (thereby inst...
by Mike
Tue May 09, 2017 12:22 am
Forum: Emulation and Cross Development
Topic: Super Expander
Replies: 27
Views: 769

Re: Super Expander

Depends on the use case, I guess. As long as the client program is in development, it probably doesn't matter. It still requires quite a lot of manual steps, regardless whether I: - set the correct RAM config, throw SE.prg into the VICE window and then do Alt-R, or - attach a Mega-Cart image, naviga...
by Mike
Tue May 09, 2017 12:12 am
Forum: Hardware and Tech
Topic: Mega-Cart
Replies: 670
Views: 112028

Re: Mega-Cart

The schematics of Mega-Cart have not been made public. That makes it at least a little more difficult to reproduce the cartridge compared to FE3, where schematics, CPLD firmware source and FE3 menu ROM source are open and have been archived by several people. I placed my order on February 16, 2013. ...
by Mike
Mon May 08, 2017 5:31 pm
Forum: Emulation and Cross Development
Topic: Super Expander
Replies: 27
Views: 769

Re: Super Expander

in the settings there is something "reset on hardware change" or so, disable that ajordison referred to dragging either the *.prg file of SE or the client into the VICE window here: both actions clear RAM and auto-load the respective file, which is o.k. for the first file (i.e. SE, when f...

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