Search found 64 matches

by FrancoisLanciault
Thu Mar 14, 2019 3:56 am
Forum: Hardware
Topic: Two peripherals attached to Q68 fried at the same time. Coincidence ?
Replies: 9
Views: 465

Re: Two peripherals attached to Q68 fried at the same time. Coincidence ?

Thanks Peter and all. I guess this is a good lesson learned for me. Always make sure the power supply cannot fall into limited current mode. I won't make the same mistake twice. Just loosing a keyboard is not too bad. Could have been worse. I have re-connected my new keyboard combo through the KVM s...
by FrancoisLanciault
Wed Mar 13, 2019 3:21 am
Forum: Hardware
Topic: Two peripherals attached to Q68 fried at the same time. Coincidence ?
Replies: 9
Views: 465

Two peripherals attached to Q68 fried at the same time. Coincidence ?

Hi, As the title says, my Q68 setup sustained multiple casualties that appeared to take place at the same time. The Q68 itself still work great. But I want to have expert opinions as to what might have happened and precautions I should take in the future. Here is the setup: Q68 powered by a HP-6623A...
by FrancoisLanciault
Mon Mar 11, 2019 6:27 pm
Forum: Hardware
Topic: Poll: CPU choice
Replies: 45
Views: 1661

Re: Poll: CPU choice

Dave,

Do all 3 options allow a GC or SGC to be installed in the left expansion slot ?

I would buy your mother board if it become available (I have a lot of reliability issues with the original one) . But as I would install my GC, the internal memory amount is not important.

François
by FrancoisLanciault
Thu Feb 21, 2019 8:45 pm
Forum: Hardware
Topic: 8302<>8049 communications...
Replies: 48
Views: 4156

Re: 8302<>8049 communications...

BTW - given recent experience re-working the QNET driver around Q68's hardware-timer, I can say that any 8302 replacement should have a high precision timer included - it would make any further QNET driver development soooo much easier... Imminent release of a new SMSQ/E for Q68 with QNET driver im...
by FrancoisLanciault
Sun Jan 20, 2019 2:14 am
Forum: Hardware
Topic: TF Services Interfaces and BBC Micro:bit
Replies: 19
Views: 1528

Re: TF Services Interfaces and BBC Micro:bit

Hi, The Q68 has a I2C interface on tge board, which I have fitted a SIL header. All Tony's Inferfaces can be used. The only problem is the lack of external I2C connector when the Q68 board is fitted into a case. The real only problem is that no driver exist yet for the Q68. Unless I missed them. On...
by FrancoisLanciault
Thu Jan 10, 2019 11:03 pm
Forum: General QL Chat
Topic: The QL and the 16 bit revolution.
Replies: 1
Views: 388

Re: The QL and the 16 bit revolution.

Don't forget the Hewlett-Packard line of 68000 computers. The first one, the 9826A, was released long before the QL in 1981. The HP Basic that was included with these computers was very fast and much more complete than anything available for QLs, Amigas and Ataris. As an example, a HP9816 with a 680...
by FrancoisLanciault
Sat Dec 08, 2018 5:30 pm
Forum: Hardware
Topic: Q68, QL-NET and I2C
Replies: 3
Views: 447

Re: Q68, QL-NET and I2C

Constant speed is not required for I2C, it should just not be too fast. There is very little SRAM, so it should only be used if speed is critical. I2C is low speed, so unless there are very special applications, normal SDRAM is okay. Ok, good to know. I get it now, data follow the clock signal, clo...
by FrancoisLanciault
Fri Dec 07, 2018 6:19 pm
Forum: Hardware
Topic: Q68, QL-NET and I2C
Replies: 3
Views: 447

Q68, QL-NET and I2C

Hi, Hope to have some spare time during the holidays. On the program: using I2C on the Q68 and one day, the QL-NET. A few questions: I2C: From the Q68 user manual, I see that the two I2C pins can be controlled by writing bytes at address $1C1C0 and $1C1C4. I also remember reading that there is no su...
by FrancoisLanciault
Tue Nov 27, 2018 11:58 pm
Forum: Hardware
Topic: Q68 speed vs 680X0
Replies: 40
Views: 3410

Re: Q68 speed vs 680X0

On an Atari TT030 (30MHz 68030) it takes 127 seconds. Unfortunately SMSQ/E doesn't run in fast RAM so I can't test it with the uncontended EDO RAM only the slow RAM shared with the video sub-system. But if we assume the code is so small it should run from cache, the RAM speed should not matter... A...
by FrancoisLanciault
Tue Nov 27, 2018 10:17 pm
Forum: Hardware
Topic: Q68 speed vs 680X0
Replies: 40
Views: 3410

Re: Q68 speed vs 680X0

Peter wrote:My 80 MHz Q60 takes 18 seconds for 2000000.


:shock:
That's fast!

François

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