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by tofro
Thu Apr 27, 2017 8:20 pm
Forum: Hardware
Topic: Random hardware ideas!
Replies: 43
Views: 1480

Re: Random hardware ideas!

Maybe I misunderstood - i was assuming an 680>=20 CPU. Hard to keep up with the complete discussion. A 68008 would most probably have a hard time feeding the DAC continuously.

Tobias
by tofro
Thu Apr 27, 2017 7:18 pm
Forum: Hardware
Topic: Random hardware ideas!
Replies: 43
Views: 1480

Re: Random hardware ideas!

SSS should be reasonably simple in case you have sufficient CPLD capacity and pins. It consists of an 8-bit port, an R2R ladder, a timer and an interrupt, maybe an OpAmp or a transistor in the simplest case. Adding a hardware queue like in Q68 might be a bit more demanding. In case you use proper ad...
by tofro
Sun Apr 23, 2017 11:32 am
Forum: Software & Programming
Topic: QPC2 Windows Quirk
Replies: 2
Views: 167

Re: QPC2 Windows Quirk

That's actually not a quirk. That is the normal behaviour of a running Pointer Environment. If you'd run PE (i.e ptrgen, wman and hot_rext) on your QL, it would behave exactly identical. The main difference is that PE is not optional but always active with SMSQ/E, while you have the choice in QDOS. ...
by tofro
Sun Apr 23, 2017 11:28 am
Forum: Hardware
Topic: Random hardware ideas!
Replies: 43
Views: 1480

Re: Random hardware ideas!

OK, geddid. Once you make the buffer large enough, you're fine without interrupts. Large buffers, however, make stuff like WinAmps "visual equalizer" more difficult to implement - It's hard to know "what's played at the moment" - That's already hard to do with the current SSS dri...
by tofro
Sun Apr 23, 2017 8:08 am
Forum: Hardware
Topic: Random hardware ideas!
Replies: 43
Views: 1480

Re: Random hardware ideas!

The Vinculum chips are far easier to implement than a "standard" USB host controller. They actually might be a solution for the QL. But I go with Peter in saying "Solution? - To what problem?". Keyboard/Mouse is not really a problem, storage neither, and printing should be solved...
by tofro
Sun Apr 23, 2017 7:31 am
Forum: General QL Chat
Topic: SERNET question
Replies: 4
Views: 263

Re: SERNET question

Sernet used to be part of the SMSQ/E distribution of the Q40 and Q60 computers and was also offered separately, I think through Jochen Merz.
I have no idea about its current legal status.

Tobias
by tofro
Sat Apr 22, 2017 8:45 pm
Forum: Hardware
Topic: Fun things to do with an MC68EC020....
Replies: 153
Views: 15967

Re: Fun things to do with an MC68EC020....

You might also want to consider PCB routing issues: You'll be having up to 6 buses on your board (Address of different width, data of different width and control with some QL-specific signals, each both locally and towards the QL), depending on how far you want to be able to decouple your board's ad...
by tofro
Sat Apr 22, 2017 7:28 pm
Forum: Hardware
Topic: Random hardware ideas!
Replies: 43
Views: 1480

Re: Random hardware ideas!

Anyone interested in the driver side? I have programmed two (full) USB drivers in my life - The first and the last one (incidentally, the same one). USB as such is not so hard - you just hand small blocks of memory to and from the hardware. The problem is: You need to put USB devices on top of you ...
by tofro
Wed Apr 19, 2017 9:11 pm
Forum: QL Emulation
Topic: MAKE_DIR command needed for uQLx
Replies: 11
Views: 547

Re: MAKE_DIR command needed for uQLx

Text87 should actually work in uQLX when you set it up in original resolution and with a non-Minerva ROM (JS or MG). This makes uQLX emulate the video memory just like on the QL and in the same layout - In this case, I don't see a reason why Text87 shouldn't work.

Tobias
by tofro
Wed Apr 19, 2017 5:48 pm
Forum: Compatibles Corner
Topic: Q68 case
Replies: 8
Views: 361

Re: Q68 case

Dave,

honestly: I doubt that anything the average sausage laying machine ;) could produce would look more professional than this really sharp case

Tobias

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