Search found 2547 matches

by Dave
Fri Mar 05, 2021 9:37 pm
Forum: Hardware
Topic: QIMI interface repair
Replies: 23
Views: 1253

Re: QIMI interface repair

If Derek is busy, I'm not. I offered to make a run in 2014. I'd be happy to do one now but I defer to Derek.
by Dave
Fri Mar 05, 2021 4:51 pm
Forum: General QL Chat
Topic: QL Adventurers Forum
Replies: 2
Views: 100

Re: QL Adventurers Forum

Hi Richard. LONG time no see! *hugs*

All we need is for TT and Lau to register, and the circle will be complete.

(Sorry not sorry for off-topic)
by Dave
Thu Mar 04, 2021 6:14 pm
Forum: Hardware
Topic: SGC 2.49 ROM disassembly...
Replies: 2
Views: 185

Re: SGC 2.49 ROM disassembly...

Eeeexcellent!

Thank you, Marcel.
by Dave
Thu Mar 04, 2021 1:26 am
Forum: Hardware
Topic: SGC 2.49 ROM disassembly...
Replies: 2
Views: 185

SGC 2.49 ROM disassembly...

Does anyone have an annotated disassembly of the SGC 2.49 ROM? If not, it would be interesting and useful to walk through it here in the group to see in detail how the SGC starts up, moves data, reconfigures things, edits various versions of QDOS and Minerva, and then restarts the system. Does anyon...
by Dave
Tue Mar 02, 2021 5:56 pm
Forum: The Off-Topic Section
Topic: Today I Received...
Replies: 379
Views: 48871

Re: Today I Received...

Today I received 10x Freescale 68VZ328 33MHz parts. They're interesting! Built in DRAM refresh manager, UARTs, SPI, RTC, and the funkytown chip select logic that can define areas of memory as 8- or 16-bit accessible. That chip select logic also allows programmed generation of DTACK. They're for an S...
by Dave
Mon Mar 01, 2021 6:09 pm
Forum: Hardware
Topic: Cyberpunk Retro Futuristic QL Case Project
Replies: 24
Views: 1329

Re: Cyberpunk Retro Futuristic QL Case Project

Funny thing. I have a QL with two SD slots. I realised I can lower the right microdrive square bump to be level with the keyboard case cover, and and going to start on that mod this weekend. That is a really neat effect, and I would love it if you made a video showing some of the techniques you used...
by Dave
Tue Feb 23, 2021 8:24 pm
Forum: General QL Chat
Topic: Inkjet ink
Replies: 33
Views: 2256

Re: Inkjet ink

As a survivor of last week in Texas when so many around me didn't... I'm half way between laughing and crying.
by Dave
Tue Feb 23, 2021 4:54 pm
Forum: Hardware
Topic: Ethernet for the QL
Replies: 39
Views: 2693

Re: Ethernet for the QL

My instinct here would be to use an ATF1502 as decoder and IRQ hold. It has the capacity to do all address decoding for chip selects for RAM and ethernet, a single flipflop to hold interrupts until they're enabled. If reconfiguring the CP2200 is a single write cycle, it could be triggered by /WR and...
by Dave
Tue Feb 23, 2021 4:29 pm
Forum: Hardware
Topic: ql printer repair woes
Replies: 37
Views: 2593

Re: ql printer repair woes