Search found 1031 matches

by tofro
Thu May 18, 2017 10:36 am
Forum: Hardware
Topic: Discussion about connecting RASPI to QL
Replies: 19
Views: 898

Re: Discussion about connecting RASPI to QL

and why not completely forgo this and use the RasPI inside the QL case, then use the GPIO pins to interface the keyboard and use the GPIO matrix keyboard driver? (I know it's not as much fun) but it's a good alternative to create a super powerful QL. Because then it's no longer a QL. Some people (i...
by tofro
Wed May 17, 2017 9:30 pm
Forum: Software & Programming
Topic: Converting ESC/P2 output for modern printing
Replies: 58
Views: 4021

Re: Converting ESC/P2 output for modern printing

I was under the impression you'd be looking into the emulation of impact dot matrix printers. BTW: ESC/P2 with colour support was actually already there before the first inkjets came up. I have a (relatively recent, only some years old) LQ-300+ colour impact printer here that uses a CMYK ribbon. Not...
by tofro
Wed May 17, 2017 8:51 pm
Forum: Software & Programming
Topic: Converting ESC/P2 output for modern printing
Replies: 58
Views: 4021

Re: Converting ESC/P2 output for modern printing

After all, Rich is trying to emulate a 1995 Epson printer, not a modern inkjet. Maybe I'm a little too far on the retro path, but I bet if you'd try 24 times overprinting with a real Epson LQ, you'd be ending up (after waiting a very long time) with a totally messed up ink ribbon and a lot of holes ...
by tofro
Wed May 17, 2017 8:28 pm
Forum: Software & Programming
Topic: Converting ESC/P2 output for modern printing
Replies: 58
Views: 4021

Re: Converting ESC/P2 output for modern printing

However, making an accurate method of merging the 6 colours (as would happen on an Epson printer) is proving problematic. Can anyone find a C program to convert CMYK to 1 byte RGB (or possibly re-write the cmyk_to_rgb() function in the PrinterConvert.c )? I'm a bit lost in that function - Why does ...
by tofro
Mon May 15, 2017 9:56 am
Forum: Hardware
Topic: Motorola TS68008CV8 -
Replies: 2
Views: 192

Re: Motorola TS68008CV8 -

Ceramic package and MIL-spec for environmental reliability is probably a bit overkill, but yes, should be fine.

Tobias
by tofro
Sun May 14, 2017 11:00 am
Forum: Hardware
Topic: Discussion about connecting RASPI to QL
Replies: 19
Views: 898

Re: Discussion about connecting RASPI to QL

Derek, other than the Beep, the QL has no established history of co-processors. The first thing that in my opinion would need to be defined would be: What is it you want to achieve whith a co-processor? For the moment, I really don't see a lot of possible uses - If it's only hardware-emulating anoth...
by tofro
Fri May 12, 2017 9:48 pm
Forum: Hardware
Topic: Announcement - new QL Interface
Replies: 177
Views: 11182

Re: Announcement - new QL Interface

It should actually be only a minor task to write a small program that finds the flp_ (or any other) driver's linkage block and unlinks the driver. Assuming that the driver allocates everything according to QL standards, it should be possible to find and remove all of the memory footprint of the driv...
by tofro
Thu May 11, 2017 8:25 am
Forum: Hardware
Topic: What is it ? QL RamDisk ???
Replies: 5
Views: 277

Re: What is it ? QL RamDisk ???

Jan is correct. This is most probably a Toolkit II ROM. It should give you the standard TK2 commands and might possibly have to be activated using the command "TK2_EXT". Care did, however, re-sell their ROM cartridges to other software vendors, so it could basically be anything that fits i...
by tofro
Fri May 05, 2017 7:28 pm
Forum: Hardware
Topic: Q68 compatible peripherals on other QL systems
Replies: 54
Views: 2520

Re: Q68 compatible peripherals on other QL systems

On the subject of detecting CPU, is there a method of detecting the currently used bus width by the OS? The CPU does this transparently to the OS, so is there a way for it to find out? Nope, at least not intrinsically. That is transparent to code running on the CPU. In case you have no CPU cache an...
by tofro
Tue May 02, 2017 10:46 am
Forum: Hardware
Topic: Random hardware ideas!
Replies: 59
Views: 2799

Re: Random hardware ideas!

Write access to a register is not really performance critical. Read the register address to write a 0, + 1 to write a 1, and so on. Needs exactly the same time as reading. Because you need to reserve 256 addresses per r/w register, this method is not very usable to write to external memory. Handling...

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