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Forum: Coders. C/C++ 03 May 2020, 10:02
Replies: 9
Views: 536
Posted By Sim085
Thanks bebbo, will go through those...

Thanks bebbo, will go through those implementations.
Forum: Coders. C/C++ 01 May 2020, 17:50
Replies: 9
Views: 536
Posted By Sim085
Ok I understand. In that case for the moment will...

Ok I understand. In that case for the moment will try and use the standard libraries and then maybe go through it again and re-write with amiga specific functions.
Forum: Coders. C/C++ 01 May 2020, 17:45
Replies: 9
Views: 536
Posted By Sim085
That was another question I was going to ask....

That was another question I was going to ask. Basically I have a simple property file.

key1=value1
key2=value2
etc..

At the moment I am reading the file to memory and then traverse the memory...
Forum: Coders. C/C++ 01 May 2020, 17:02
Replies: 9
Views: 536
Posted By Sim085
Reading files and other stuff.

I am writing a small solution, mostly using it as an excuse to write something in C for the Amiga platform.

I have searched over the internet and from what I can see there are at least two...
Forum: Hardware mods 30 April 2020, 21:48
Replies: 301
Views: 33,166
Posted By Sim085
Ok, found the answer, sorry had not seen the...

Ok, found the answer, sorry had not seen the other project.
Forum: Hardware mods 30 April 2020, 21:46
Replies: 301
Views: 33,166
Posted By Sim085
What is the socket next to the Agnus chip for?

What is the socket next to the Agnus chip for?
Forum: support.Hardware 26 April 2020, 10:39
Replies: 23
Views: 1,177
Posted By Sim085
Strange, works for me (opens PDF document...

Strange, works for me (opens PDF document directly).
Try this one. You have to select the model (third entry in table).
http://phase5.a1k.org/manuals.html
Forum: support.Hardware 26 April 2020, 00:09
Replies: 23
Views: 1,177
Posted By Sim085
The manual for the Blizzard 1230 IV can be found...

The manual for the Blizzard 1230 IV can be found here:
http://phase5.a1k.org/files/1230iv.pdf

Information on the 60/70ns jumper can be found on page 4 (German) and page IV (English).
Forum: support.Hardware 23 April 2020, 23:31
Replies: 67
Views: 3,361
Posted By Sim085
Thank you both for the advice. I will not hijack...

Thank you both for the advice. I will not hijack this thread any further but wanted to still share my gratitude for the very detailed answers given :).
Forum: support.Hardware 22 April 2020, 19:20
Replies: 67
Views: 3,361
Posted By Sim085
Hi Vipersan, sorry to hijack your thread a...

Hi Vipersan, sorry to hijack your thread a little. I am planning to do same mod to my rev6a motherboard. How did you solder those header pins to the motherboard? I do not recall those are...
Forum: support.Hardware 21 April 2020, 22:04
Replies: 218
Views: 34,922
Posted By Sim085
Thanks Eriond for the very detailed explanation....

Thanks Eriond for the very detailed explanation. Much appreciated.
Forum: support.Hardware 21 April 2020, 10:06
Replies: 218
Views: 34,922
Posted By Sim085
Does this mean one would not need to mod a rev6a...

Does this mean one would not need to mod a rev6a motherboard as described here (http://eab.abime.net/showpost.php?p=1362770&postcount=141) (http://eab.abime.net/showpost.php?p=1362770&postcount=141)...
Forum: support.Hardware 20 April 2020, 23:28
Replies: 8
Views: 670
Posted By Sim085
I use the table at the end of this page for...

I use the table at the end of this page for reference:
https://www.bigbookofamigahardware.com/bboah/product.aspx?id=1478
Forum: support.Hardware 19 April 2020, 20:19
Replies: 3
Views: 613
Posted By Sim085
Can CPU run at different clock speed than FastRAM?

I have added a FastRAM + IDE card to an A500. This does not has a crystal on it and runs at 7Mhz like everything else. Now, I have seen some open source projects which can run a CPU at 14Mhz. If the...
Forum: support.Hardware 18 April 2020, 23:22
Replies: 6
Views: 598
Posted By Sim085
Thanks demolition for all the information. It has...

Thanks demolition for all the information. It has been a nice history lesson for me :)
Forum: support.Hardware 18 April 2020, 15:48
Replies: 6
Views: 598
Posted By Sim085
I guess then this confirms the rev2B I have is...

I guess then this confirms the rev2B I have is definitely an Escom as that in the photo is an Escom A1200 motherboard.

Are there any other documented changes Escom did to the A1200 and what they...
Forum: support.Hardware 18 April 2020, 13:39
Replies: 6
Views: 598
Posted By Sim085
To be honest it did not even pass through my mind...

To be honest it did not even pass through my mind to try it. I am more after the "history" of it all. I am pretty sure it will work but will try it out. I do not play any games from Floppy Disks...
Forum: support.Hardware 18 April 2020, 00:13
Replies: 6
Views: 598
Posted By Sim085
Do I have an Escom A1200 motherboard? or not?

A couple of years ago my A1200 motherboard no longer worked and therefore I had to buy a new one. To replace it I bought another rev2B motherboard like the one I had.

Today I was testing the...
Forum: support.Hardware 15 April 2020, 21:06
Replies: 27
Views: 1,127
Posted By Sim085
I would also be reluctant. I would not do it....

I would also be reluctant. I would not do it. Only reason why I am doing so much experimentation is because in my case both drives where not working in one way or another and I reasoned (wrongly it...
Forum: support.Hardware 15 April 2020, 14:12
Replies: 27
Views: 1,127
Posted By Sim085
I have checked the specification of the hall...

I have checked the specification of the hall effect sensor on the other thread. From what I understand when the chip detects something it should output 2.45V to 2.55V. Is this correct?

Therefore I...
Forum: support.Hardware 15 April 2020, 09:35
Replies: 27
Views: 1,127
Posted By Sim085
Will go through that thread. I will also try to...

Will go through that thread. I will also try to transplant the hall effect sensor from the dead drive to this one to see if that changes anything.
Forum: support.Hardware 14 April 2020, 23:38
Replies: 27
Views: 1,127
Posted By Sim085
I attached another image. Is the hall effect...

I attached another image. Is the hall effect sensor the one in the yellow box at the top or the orange box at the right bottom corner? (Sorry I am a newbie in these things, tried to search on google...
Forum: support.Hardware 14 April 2020, 21:37
Replies: 27
Views: 1,127
Posted By Sim085
Well I'll keep updating this thread if I find...

Well I'll keep updating this thread if I find anything. Btw - is the hall effect sensor the one highlighted in red in the attached picture?

(Please ignore the missing capacitor further down. I...
Forum: support.Hardware 14 April 2020, 19:30
Replies: 27
Views: 1,127
Posted By Sim085
When I first enter in the Signal Test screen [F5]...

When I first enter in the Signal Test screen [F5] I can see the head move full forward and then backwards. The screen says:


Motors=( ) CIAAPRA=0xec ( TK0 )


If I press F6 (Step) I can see...
Forum: support.Hardware 14 April 2020, 17:06
Replies: 27
Views: 1,127
Posted By Sim085
When I used a disk formatted with this drive...

When I used a disk formatted with this drive (while I had the READY signal) yes. But the moment I loose the READY signal nothing else works.



Will try replacing the "hall effect sensor chip"...
Forum: support.Hardware 14 April 2020, 11:16
Replies: 27
Views: 1,127
Posted By Sim085
I have checked the voltage on the new capacitor...

I have checked the voltage on the new capacitor and it is a solid 12.5v when turned on. So don't think that is the problem.

Given the READY signal is issued when;

[a] When a disk is present...
Forum: support.Hardware 13 April 2020, 22:41
Replies: 27
Views: 1,127
Posted By Sim085
When it is working (has READY signal) I can...

When it is working (has READY signal) I can format a disk with the drive and calibration with Amiga Test Kit says it is working. After I use the drive for a couple of tries at most it stops working...
Forum: support.Hardware 13 April 2020, 20:42
Replies: 27
Views: 1,127
Posted By Sim085
Had an extra 10uf capacitor and replaced the...

Had an extra 10uf capacitor and replaced the front capacitor of the floppy drive, the one next to the floppy drive opening. Unfortuanstly got same results. Drive ready signal works for some time but...
Forum: support.Hardware 13 April 2020, 20:34
Replies: 12
Views: 448
Posted By Sim085
When I rechecked, mine had two small holes. My...

When I rechecked, mine had two small holes. My connector is brown.
Forum: support.Hardware 13 April 2020, 10:25
Replies: 27
Views: 1,127
Posted By Sim085
Can confirm the above. This morning I plugged in...

Can confirm the above. This morning I plugged in the floppy drive again. I did a signal test from Amiga Test Kit and it started giving a Index Pulses. When doing a read test it now says READY too...
Forum: support.Hardware 13 April 2020, 09:47
Replies: 27
Views: 1,127
Posted By Sim085
So when I use Amiga Test Kit and trigger the...

So when I use Amiga Test Kit and trigger the bottom motor I can see it spinning. Possibly slower that that of another healthy drive I have but it does spin.

What I am sure of is that the drive...
Forum: support.Hardware 13 April 2020, 00:22
Replies: 27
Views: 1,127
Posted By Sim085
Ok, I have done some tests with a healthy floppy...

Ok, I have done some tests with a healthy floppy drive and then again on the one I am trying to get working.

From Amiga Test Kit, when I do a signal test [F5] and use the motor on/off option [F5]...
Forum: support.Hardware 12 April 2020, 21:59
Replies: 27
Views: 1,127
Posted By Sim085
Found on another thread that "Ready is true when...

Found on another thread that "Ready is true when the disk is inserted and the disk has achieved the correct RPM". Now the message I have is "No Ready Signal" no that Ready is false (don't know if the...
Forum: support.Hardware 12 April 2020, 21:12
Replies: 27
Views: 1,127
Posted By Sim085
hmm .. When I select [F6] now it tells me "No...

hmm .. When I select [F6] now it tells me "No Ready Signal". I cconfirmed correct setting is on the back of the drive which I did not change from before. What else can determine READY signal being...
Forum: support.Hardware 12 April 2020, 18:42
Replies: 27
Views: 1,127
Posted By Sim085
I have been reading about floppy disk alignment...

I have been reading about floppy disk alignment and found the following;

"De-calibrated drives show the following symptoms: They read disks written by themselves fine, but fail to read other disks...
Forum: support.Hardware 12 April 2020, 16:50
Replies: 27
Views: 1,127
Posted By Sim085
Getting one working Floppy Drive from two non-working ones

Hello,

Had two non-working JU-253-033P Floppy Drives. One of them had the back motor not working and the other one had the bottom motor not working. I decided to get one working floppy drive by...
Forum: support.Hardware 12 April 2020, 16:14
Replies: 3
Views: 208
Posted By Sim085
Thanks both for the advice. Going to clean the...

Thanks both for the advice. Going to clean the area and see how that goes.
Forum: support.Hardware 11 April 2020, 21:14
Replies: 3
Views: 208
Posted By Sim085
Floppy drive randomly thinks there is a floppy disk inserted

I have a TAEC floppy drive like this one:
http://www.nightfallcrew.com/wp-content/gallery/teac-fd-235f-recap-amiga-floppy-drive/20170829_185321.jpg

I use it with an A500. It worked like a charm...
Forum: support.Hardware 09 April 2020, 14:30
Replies: 12
Views: 448
Posted By Sim085
I am replacing the Angus with a mega chip to try...

I am replacing the Angus with a mega chip to try the 2mb chipRam mode on this rev6 motherboard.
Forum: support.Hardware 09 April 2020, 11:18
Replies: 14
Views: 633
Posted By Sim085
Ok, for the rest of the chips I am adding extra...

Ok, for the rest of the chips I am adding extra solder on the legs, use a wick to remove the soldering and then use hot air at 270 degree.

With regards to the crystal do I need to take more...
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