Search found 2291 matches

by Dave
Mon May 20, 2019 2:34 pm
Forum: General QL Chat
Topic: Internet and the QL
Replies: 37
Views: 1451

Re: Internet and the QL

I wonder if a pragmatic approach, like finding or hosting classic email servers, could help without "outsourcing" encryption to a non-native CPU. (By the way, I'm not sure that an encryption engine outside the QL would automatically lead to the development of an email client which can han...
by Dave
Mon May 20, 2019 2:54 am
Forum: General QL Chat
Topic: Internet and the QL
Replies: 37
Views: 1451

Re: Internet and the QL

I find it exaggerated to say that TCP/IP is useless without encryption. It can still be used for LAN connections, internet connections from QL to QL, and many websites. From my experience with QLwIP I see the largest problem in the requirement of encryption for email server connections. (Which does...
by Dave
Sun May 19, 2019 8:30 pm
Forum: Hardware
Topic: Asymmetric multiprocessing...
Replies: 25
Views: 750

Re: Asymmetric multiprocessing...

Derek_Stewart wrote:I have not checked them against the original, but they look about right.


So Dn -> ZAn and An -> ZDn? Why would they do that?
by Dave
Sun May 19, 2019 8:25 pm
Forum: Hardware
Topic: Asymmetric multiprocessing...
Replies: 25
Views: 750

Re: Asymmetric multiprocessing...

....for a basic system you don’t need dual port RAM. One third party Z80 second processor system for the Acorn BBC B used two PIO chips back-back for processor to processor communications. In this case a 6522 VIA for the 6502 and a 8255A for the Z80A. Nothing *needs* dual port RAM. But: If I put a ...
by Dave
Sat May 18, 2019 9:18 pm
Forum: General QL Chat
Topic: Internet and the QL
Replies: 37
Views: 1451

Re: Internet and the QL

A real TCP/IP card for the QL will be more interesting for me: It can be a new way for write new software that can connect directly on internet (IRC, client email, browsers, etc...). A real TCP/IP card is only useful if we have access to an encryption engine. It would take a QL several days to encr...
by Dave
Sat May 18, 2019 5:26 pm
Forum: Hardware
Topic: Asymmetric multiprocessing...
Replies: 25
Views: 750

Re: Asymmetric multiprocessing...

What about a graphics processor. The QL operating system just tells the second processor to display a character at a particular position, or draw a line between two points. Then gets on with something else, while the second processor gets on with it. The QL side would not get bogged down dealing wi...
by Dave
Sat May 18, 2019 5:22 pm
Forum: Hardware
Topic: Asymmetric multiprocessing...
Replies: 25
Views: 750

Re: Asymmetric multiprocessing...

But looking at the Issue 8 discussion, Rom Port is being removed. Issue 8 is definitely retaining the ROM port. What we're doing is ending the motherboard between the ROM port and joystick port. An extender will implement the ROM port, and can either be used or - if you're not using the ROM port - ...
by Dave
Sat May 18, 2019 6:45 am
Forum: Hardware
Topic: Asymmetric multiprocessing...
Replies: 25
Views: 750

Re: Asymmetric multiprocessing...

New idea, though it is not asymmetric processing. A bridge board that puts 128K of common memory between two QLs. Both can have read and write access to all of it. I wonder, besides high speed two player gaming, what it could be used for.
by Dave
Fri May 17, 2019 11:28 am
Forum: General QL Chat
Topic: Internet and the QL
Replies: 37
Views: 1451

Re: Internet and the QL

When I asked if keyboard, sound and SER need new drivers, the answer was no, so I thought original QL SER was also to be emulated. I am hoping that the new hardware will not require any changes for an existing OS. Remember, this isn;t applicable to Issue 8, just Issue X+..... I read in forums that ...