Search found 90 matches

by chriskgnr
Wed Dec 03, 2014 9:43 am
Forum: General QL Chat
Topic: Sandy Electronics...
Replies: 19
Views: 11453

Re: Sandy Electronics...

Thanks Dave! :D
by chriskgnr
Wed Dec 03, 2014 8:22 am
Forum: General QL Chat
Topic: Sandy Electronics...
Replies: 19
Views: 11453

Re: Sandy Electronics...

Hi,

A few months ago, i replaced the disintegrated original felt pads with self-adhesive pads made by me, but i am not satisfied because 50% of the cartridges fail to format. I want to replace the old ones with Dave's pads. What is the way to remove the old self-adhesive pads?
by chriskgnr
Sat Nov 22, 2014 4:27 pm
Forum: Hardware
Topic: Double 3.5 disk drive issue.
Replies: 33
Views: 17740

Re: Double 3.5 disk drive issue.

Hi I had a similar problem. Connecting line 34 to gnd (line 33) on the controller side worked for me and finally I can use my Micro P. disk system. I had already crossed line 10 with line 12 because I use a PC floppy drive. I use 1.44 HD floppy with 720K DD disks (1.44 disks with the hd hole covere...
by chriskgnr
Wed Nov 19, 2014 3:54 pm
Forum: General QL Chat
Topic: Sandy Electronics...
Replies: 19
Views: 11453

Re: Sandy Electronics...

that is very sad. :(
by chriskgnr
Thu Nov 06, 2014 1:05 pm
Forum: Hardware
Topic: Sandy SuperQBoard firmware.
Replies: 35
Views: 16746

Re: Sandy SuperQBoard firmware.

I bend the pin 27 out of the socket and solder the a13 pin(A14) form the QL connector to it. Now it maps the disk interface firmware but not the TKII. I think it needs more modification the pcb.
by chriskgnr
Wed Nov 05, 2014 1:27 pm
Forum: Hardware
Topic: Sandy SuperQBoard firmware.
Replies: 35
Views: 16746

Re: Sandy SuperQBoard firmware.

I have programmed an eprom(27c256) with 1.19 and TKII, but it maps only the TKII. I think that the Sandy Super Q Board issue 1 pcb that i have, is designed to accept only 27(C)128 eproms, because pin 27 and 28 are shorted(to Vcc). And i don't think that if i cut the trace between 27 and 28 pin it wi...
by chriskgnr
Tue Nov 04, 2014 11:41 pm
Forum: Hardware
Topic: Sandy SuperQBoard firmware.
Replies: 35
Views: 16746

Re: Sandy SuperQBoard firmware.

I have a QL with the JM version firmware. I have read that JM version has a bug about the expansions cards and that bug is that it maps only one expansion card firmware. If this is correct then my QL will map just one firmware, the disk interface firmware or the TKII. :?
by chriskgnr
Tue Nov 04, 2014 9:29 am
Forum: Hardware
Topic: Sandy SuperQBoard firmware.
Replies: 35
Views: 16746

Re: Sandy SuperQBoard firmware.

If there is the 4AFB header before the TKII code, it means that the Rom Cartridge Slot is useless?
by chriskgnr
Tue Nov 04, 2014 7:38 am
Forum: Hardware
Topic: Sandy SuperQBoard firmware.
Replies: 35
Views: 16746

Re: Sandy SuperQBoard firmware.

So, in the first half (0000-3FFF) will be the Sandy Q Board 1.19 firmware and in the second (4000-7FFF) will be the TKII code. There must be the 4AFB header before the TKII code?
by chriskgnr
Mon Nov 03, 2014 7:59 pm
Forum: Hardware
Topic: Sandy SuperQBoard firmware.
Replies: 35
Views: 16746

Re: Sandy SuperQBoard firmware.

You are referring about 1.16+TKII and 1.19+TKII. The original firmwares don't include the TKII code?