Search found 223 matches

by M68008
Fri Nov 12, 2021 6:27 pm
Forum: Help for New Users
Topic: A number of noob questions - sorry!!
Replies: 34
Views: 13084

Re: A number of noob questions - sorry!!

Andrew wrote: where can I download mdump2 ?
http://www.terdina.net/ql/soft/mdump_task

The file has a Q-emuLator-style header: To run it on a QL, use either Q-emuLator or QPC to copy it to a floppy or image.
by M68008
Fri Nov 12, 2021 9:07 am
Forum: Help for New Users
Topic: A number of noob questions - sorry!!
Replies: 34
Views: 13084

Re: A number of noob questions - sorry!!

roninfourseven wrote: I downloaded mdump from Simone Voltolini from the link on his website: https://sinclairql.wordpress.com/
That's a beta version. The latest one has a number of fixes.
by M68008
Fri Nov 12, 2021 9:04 am
Forum: Help for New Users
Topic: A number of noob questions - sorry!!
Replies: 34
Views: 13084

Re: A number of noob questions - sorry!!

Use mdump_task to create images of the real carts. I've been able to get mdump_task from the latest version of Q-Emulator, and I've also managed to get it over onto floppy using wxqt2, but.... If I try to execute with the info from here: http://qxl.win/ql_cartridge_recovery.htm , all I get is 'bad ...
by M68008
Wed Aug 11, 2021 2:02 am
Forum: Hardware
Topic: Hermes status
Replies: 87
Views: 17602

Re: Hermes status

The IPC interface is basically two bits that are bit-banged serial with a bit of a strange twist. IPC communication on the QL is pretty bad. Apart from the 1-bit serial link, there is no interrupt involved! When the QL contacts the IPC (including during every 50Hz interrupt), it can sit idle for a ...
by M68008
Thu Aug 05, 2021 1:36 am
Forum: Hardware
Topic: ULA replacement - could it work in 16-bit mode ?
Replies: 24
Views: 6374

Re: ULA replacement - could it work in 16-bit mode ?

Brane2 wrote:I've just noticed that China has heaps of fast static RAMs ( 128k*8 ) and 2Mx16/60ns IIRC for literally under $1/piece.
Link?
by M68008
Wed Aug 04, 2021 11:33 pm
Forum: Hardware
Topic: CPU 68080
Replies: 53
Views: 13147

Re: CPU 68080

BTW, is there a link to other parts that he refers to in this article ? Namely, it would be nice to know what exactly happens during exception processing. Exception processing timings are at the end of the document and the external references are defined in the Foreword section. US Patent 4325121 i...
by M68008
Wed Aug 04, 2021 8:36 pm
Forum: Hardware
Topic: CPU 68080
Replies: 53
Views: 13147

Re: CPU 68080

BTW, would they care to share the data on how exactly does 68000 fetch instruction opeerands ( order and timings)? Here is a good doc: http://nemesis.hacking-cult.org/MegaDrive/Documentation/Yacht.txt Some info about pre-fetching: http://pasti.fxatari.com/68kdocs/68kPrefetch.html Mister FPGA can ru...
by M68008
Sun Jul 18, 2021 10:53 pm
Forum: Software & Programming
Topic: Dr. Jim's QL Dumping Ground
Replies: 94
Views: 25800

Re: Dr. Jim's QL Dumping Ground

Is there a QL equivalent to the Spectrum's SAVE "filename" SCREEN$ (which is in itself a shorthand for SAVE "filename" CODE 16384,6912) that will save a screen dump pixel-for-pixel? All I know is, it will start with SBYTES, if it exists... To save the screen: SBYTES filename,131...
by M68008
Fri Jul 16, 2021 7:51 pm
Forum: Software & Programming
Topic: Loopy bugs
Replies: 21
Views: 4165

Re: Loopy bugs

Apart from implementation bugs, the original SuperBASIC was an interpreted rather than compiled language. This makes it legal to use weird syntax. For example, here is a program to count from 1 to 10 and tell whether each number is even or odd: 100 DEFine PROCedure even_or_odd(x) 110 IF x MOD 2 == 1...
by M68008
Tue May 18, 2021 8:13 am
Forum: Software & Programming
Topic: Joystick and keyboard input
Replies: 12
Views: 2799

Re: Joystick and keyboard input

execute code from rom again. Perhaps Im stepping on limbs here, but are there disassembled ROM listings floating around somewhere? A quick google brings me down to http://www.dilwyn.me.uk/qlrom/index.html but the first notated ROM dumps I downloaded didnt contain the actual asm listings :(. Alterna...