Search found 4963 matches

by Mike
Mon May 12, 2025 11:19 am
Forum: Games
Topic: Boulder Dash Preview
Replies: 42
Views: 18451

Re: Boulder Dash Preview

For the record, the eBay auction went for 65,99 € + P&P . Why does [it need] 32 KB [...]? The cartridge contains a 6264 (8Kx8) SRAM - as scratchpad, workspace; for decompressed level data; you name it - and a 28C256 (32Kx8) hardware write protected EEPROM, the latter of which 24 KB are used for ...
by Mike
Sun May 11, 2025 11:52 am
Forum: Programming
Topic: Beta Testers Needed
Replies: 22
Views: 2048

Re: Beta Testers Needed

For the sheer fun of it, I tried out MINIMON in FAST-40: https://dateipfa.de/.Public/denial/images/minimon/MINIMON_in_FAST-40.00.png It works! :mrgreen: Moving the cursor back into the disassembly or into the hex dump does as supposed and lets the user change code or hex data. When MINIMON has been ...
by Mike
Sat May 10, 2025 1:45 am
Forum: Programming
Topic: Re-assembling ROM Disassembly
Replies: 7
Views: 267

Re: Re-assembling ROM Disassembly

I do have a copy of the Vic ROM Disassembly book [...] This happens to be the one by Peter Gerrard and Kevin Bergin? The ROM 'disassembly' in that book not only does not feature any commentary - they disassembled data tables as machine code , even put an half-hearted excuse about that in the prefac...
by Mike
Thu May 08, 2025 1:17 am
Forum: Programming
Topic: Reading Colour RAM
Replies: 14
Views: 436

Re: Reading Colour RAM

So much for the rumours, here are the facts: https://sleepingelephant.com/ipw-web/bu ... 1&start=22
by Mike
Sun May 04, 2025 4:05 am
Forum: Programming
Topic: A sample debugging session with MINIMON
Replies: 56
Views: 20786

Re: A sample debugging session with MINIMON

In conjunction with a stub cartridge , MINIMON can provide STOP/RESET functionality similar to C16/C116/+4. This allows to recover from a CPU crash, yet retains most of the zero page contents. I/O (screen and keyboard) is re-initialised and instead of showing the normal BASIC start-up message, you g...
by Mike
Thu May 01, 2025 4:51 am
Forum: Programming
Topic: A sample debugging session with MINIMON
Replies: 56
Views: 20786

Re: A sample debugging session with MINIMON

From the thread " Stack Watching in VICE ": [...] how does MINIMON handle an RTS during execution, then? What return address gets pulled? Most likely, $E144 - 1 of the SYS command used to invoke MINIMON. BASIC then continues with whatever it finds in the input area behind the position of t...
by Mike
Thu May 01, 2025 2:05 am
Forum: General Topics
Topic: Live Wire VIC-20 BBS
Replies: 25
Views: 7085

Re: Live Wire VIC-20 BBS

So, then, is there anything about the link that requires more than at least moving the thread out of immediate view for the public?

I do not have an heightened interest to also click the link and be presented with unpleasant things.
by Mike
Wed Apr 30, 2025 6:19 pm
Forum: General Topics
Topic: ** Revision 2025 Invitation / Website
Replies: 13
Views: 2465

Re: ** Revision 2025 Invitation / Website

There are quite some supporters who buy a remote ticket only to be able to vote (and to support the party of course) Those are of course another two good reasons to buy a ticket (regardless whether at site, remote or at a satellite). :) The exact number of handed-in entries remains elusive though, ...
by Mike
Wed Apr 30, 2025 1:09 pm
Forum: General Topics
Topic: ** Revision 2025 Invitation / Website
Replies: 13
Views: 2465

Re: ** Revision 2025 Invitation / Website

As a final roundup: from the "Who's here" page on Partynet, Revision 2025 had 878 official participants (i.e. people who paid for a ticket in whatever form), of whom 139 people were remote attendees (i.e. off-site and not organized in a satellite event), 49 people were satellite attendees ...
by Mike
Wed Apr 30, 2025 1:46 am
Forum: Programming
Topic: Assembler for the VIC
Replies: 21
Views: 5370

Re: Assembler for the VIC

- the MON/CART switch essentially enables/disables the cartridge (which is mapped to IO2/3) In essence, yes. There's circuitry on the cartridge, which arbitrates the I/Ox signals between the ZIF socket and the secondary cartridge. The reset logic is available all the time. - PGM enables writing to ...
by Mike
Tue Apr 29, 2025 10:04 am
Forum: Games
Topic: Boulder Dash Preview
Replies: 42
Views: 18451

Re: Boulder Dash Preview

mrr19121970 wrote:I was quoting Ullis words.
That is not at all recognizable from your earlier post. Anyhow it is a kind of statement I would only rely on if I had got it from the person themselves.
by Mike
Tue Apr 29, 2025 9:26 am
Forum: Collecting and History
Topic: WRITE NOW! cartridge image problem
Replies: 10
Views: 2202

Re: WRITE NOW! cartridge image problem

In https://sourceforge.net/p/vice-emu/code/45649/tree//trunk/vice/src/vic20/cart/writenow.c , you write: - additionally the last 2KiB of the ROM are mapped to IO at 9800-9BFF that should actually be: "- additionally the next-to-last 1 KiB of the ROM is mapped to I/O2 ($9800..$9BFF)" From t...
by Mike
Mon Apr 28, 2025 11:13 am
Forum: Hardware and Tech
Topic: VIC-20 modified Kernal
Replies: 9
Views: 724

Re: VIC-20 modified Kernal

In addition to the effort required, and apart from faster disk routines as exemplified by JiffyDOS, what sort of thing would be best done in a kernal as opposed to a cart or disk program? If I understand correctly, the kernal is a fixed standard library or API that any software might rely on. The K...
by Mike
Mon Apr 28, 2025 5:01 am
Forum: Games
Topic: Port of BBC/Electron Boulder Dash
Replies: 15
Views: 1875

Re: Port of BBC/Electron Boulder Dash

The posts about the officially licenced version of Boulder Dash have been split off and merged into the thread Boulder Dash Preview.

Any discussion about that version and about the cartridge release should go over there. Thanks.
by Mike
Mon Apr 28, 2025 4:58 am
Forum: Games
Topic: Boulder Dash Preview
Replies: 42
Views: 18451

Re: Boulder Dash Preview

Good point! I split off the part in the original thread beginning with the (slightly misplaced) post of mrr19121970 dated from Sat Apr 19, 2025 and merged that part with the thread here.

Posts regarding the BBC port of Boulder Dash still should go there.