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Search: Posts Made By: clh333
Forum: support.Hardware Yesterday, 18:05
Replies: 2
Views: 94
Posted By clh333
Thank you for your reply. As it happens I have...

Thank you for your reply. As it happens I have two A500, one A2000 HD and one A250. I thought I would leave one of each style "stock" and upgrade one.

I acquired the 500 new in the early '90s....
Forum: support.Hardware Yesterday, 13:55
Replies: 2
Views: 94
Posted By clh333
ROM revisions question

I have an Amiga 500 and a 2000HD, both with 1.3 KS and WB. I would like to upgrade the OS and have read here that the OS and KS should "equal" each other. (Not necessarily the same revision number,...
Forum: support.Hardware 06 December 2017, 21:23
Replies: 3
Views: 149
Posted By clh333
Discovered today that I also have an A2090A...

Discovered today that I also have an A2090A MFM/SCSI controller card.
Forum: support.Hardware 06 December 2017, 17:16
Replies: 2
Views: 127
Posted By clh333
Thank you, Jope for your reply, also for the...

Thank you, Jope for your reply, also for the compatibility chart at http://jope.fi/drives/computolio/ (That is you, is it not?)

The FD cable has a twist at wires 4-6, not 10-16 as a PC FD cable...
Forum: support.Hardware 05 December 2017, 21:51
Replies: 2
Views: 127
Posted By clh333
Chinon FB-354 Jumper Positions

The two Chinon FB-354 floppy drives on my Amiga 2000 have six pins at the back between the data header and the power header. The one Chinon FB-354 on my 2500 has the same six pins but has a jumper...
Forum: support.Hardware 05 December 2017, 21:39
Replies: 3
Views: 149
Posted By clh333
Options For Empty A2091 SCSI Hard Card

Along with the purchase of an Amiga 2500 came an A2091 hard card. ROMs are Version 7 but otherwise the board is bare: A stub for power and data and a place for a SCSI drive to be attached to the...
Forum: support.Hardware 03 December 2017, 15:30
Replies: 7
Views: 290
Posted By clh333
Recently acquired an Amiga 2500, minus mouse and...

Recently acquired an Amiga 2500, minus mouse and keyboard. Found a suitable mouse on eBay but the prices for keyboards give me pause. Accordingly searching for alternatives I found this thread, and...
Forum: support.Hardware 28 October 2017, 22:13
Replies: 5
Views: 203
Posted By clh333
Power supply checks out including clock line. ...

Power supply checks out including clock line. Swapped 68000, still nada.

-CH-
Forum: support.Hardware 28 October 2017, 13:14
Replies: 5
Views: 203
Posted By clh333
Thank you for your replies. I have ordered the...

Thank you for your replies. I have ordered the ROMs and will report back their findings.

I did check the power supply at the outset but perhaps I should do that again. I checked the clock...
Forum: support.Hardware 27 October 2017, 20:17
Replies: 5
Views: 203
Posted By clh333
DOA A2000 diagnostic ROM help request

I have two A500s but recently acquired an A2000. It was depicted by the eBay seller as being ready to boot (Insert Workbench 1.3 displayed on a monitor) but sold "as is" and "untested".

Sparing...
Forum: support.Hardware 01 December 2016, 21:01
Replies: 3
Views: 482
Posted By clh333
Which to acquire?

I have several other Commodore computers including two Amiga 500s. But I lost track of the Amiga's hardware development sometime in the 1980s, as the PC ISA and PCI bus designs rose to ascendancy,...
Forum: Hardware mods 24 April 2015, 15:48
Replies: 9
Views: 1,474
Posted By clh333
Knowing nothing about the Apollo core I had to...

Knowing nothing about the Apollo core I had to research the subject and then learn what was meant by FPGA referenced there. Wow!

If I understand the implications of this technology correctly it...
Forum: Hardware mods 23 April 2015, 21:57
Replies: 9
Views: 1,474
Posted By clh333
Thanks for your reply. I will look into the chip...

Thanks for your reply. I will look into the chip upgrades outlined in the article. The DCE Viper 520 CD referenced above was probably the best option, but no longer available.

Your reference...
Forum: Hardware mods 23 April 2015, 21:46
Replies: 9
Views: 1,474
Posted By clh333
Thank you for your suggestions. The A1200s...

Thank you for your suggestions.

The A1200s that I located in a brief search today are all PAL rather than NTSC. Would that make a difference here in the US?

Your A500 project is very...
Forum: Hardware mods 23 April 2015, 16:38
Replies: 9
Views: 1,474
Posted By clh333
Amiga A500 Next Steps

My thanks to the membership for their advice and support as I resurrected my two Amiga 500s, board Rev 5. In the process I learned a good deal about the design and manufacture of the Amiga; I also...
Forum: support.Hardware 20 April 2015, 23:41
Replies: 15
Views: 1,563
Posted By clh333
Follow up to previous posts: Thanks to all...

Follow up to previous posts:

Thanks to all who contributed their suggestions and advice. I obtained the 8520 chips from an eBay sale in Germany; delivery took about two weeks and, with...
Forum: Hardware mods 20 April 2015, 23:13
Replies: 53
Views: 7,702
Posted By clh333
The PC's drives are all 1.4Mb. I no longer own...

The PC's drives are all 1.4Mb. I no longer own any lesser density 3.5" drives.

I thought about trying to use one of the Amiga's drives in its stead, but further research led me to another...
Forum: Hardware mods 01 April 2015, 16:06
Replies: 53
Views: 7,702
Posted By clh333
Thanks for your reply. There is much left to be...

Thanks for your reply. There is much left to be done:

The utility so far has refused to write the image back to the drive it copied from. I don't know why, yet, but it suggests that the...
Forum: Hardware mods 31 March 2015, 21:05
Replies: 53
Views: 7,702
Posted By clh333
Thank you for your reply. As far as I know...

Thank you for your reply.

As far as I know there were two products from Central Point: Copy II PC was a stand-alone disk copier, and Transcopy was for use with the Copy II PC Deluxe Option...
Forum: Hardware mods 29 March 2015, 19:03
Replies: 53
Views: 7,702
Posted By clh333
Thank you for your reply. Do I understand...

Thank you for your reply.

Do I understand you to mean obtain a USB ZIP drive for use with the PC? I have an IDE internal ZIP drive on one machine and a spare external - a little flaky, as I...
Forum: support.Hardware 29 March 2015, 00:49
Replies: 15
Views: 1,563
Posted By clh333
Found them on DigiKey.

Found them on DigiKey.
Forum: Hardware mods 28 March 2015, 14:03
Replies: 53
Views: 7,702
Posted By clh333
Thank you for the suggestion. I have the...

Thank you for the suggestion.

I have the Central Point Copy II PC ISA card; I was intending to use it to archive some old 5.25 floppies from the CP/M and DOS days. I guess I could use it for the...
Forum: support.Hardware 28 March 2015, 13:45
Replies: 15
Views: 1,563
Posted By clh333
I think the MAX232 is a combined driver and...

I think the MAX232 is a combined driver and receiver; I don't know if it is pin-compatible. I also read that the "slew rate" for these devices is controlled by a capacitor, which Commodore has...
Forum: Hardware mods 28 March 2015, 13:40
Replies: 53
Views: 7,702
Posted By clh333
Thank you once again for your suggestions. I'll...

Thank you once again for your suggestions. I'll research these other tools.

-CH-
Forum: Hardware mods 27 March 2015, 21:43
Replies: 53
Views: 7,702
Posted By clh333
Thank you for your reply. Regarding...

Thank you for your reply.

Regarding compression: Compression is not the main objective, but preservation. The ZIP drive is just a stepping stone to burning to DVD. I have multiple disks that I...
Forum: support.Hardware 27 March 2015, 21:30
Replies: 15
Views: 1,563
Posted By clh333
Thank you for your suggestion. I'll try...

Thank you for your suggestion. I'll try replacing the drivers.

Texas Instruments notes that the devices are MOS, have limited static protection and should be stored in conductive foam. Given...
Forum: support.Hardware 27 March 2015, 16:32
Replies: 15
Views: 1,563
Posted By clh333
Mis-spoke: U38 and U39 are Quad line driver and...

Mis-spoke: U38 and U39 are Quad line driver and receiver 1488 and 1489.
-CH-
Forum: support.Hardware 27 March 2015, 16:27
Replies: 15
Views: 1,563
Posted By clh333
A500 RS232 problems

I obtained two 8520 chips and replaced U8 on the motherboard. I then attempted once again to use the serial port to communicate with a Hayes 9600 modem, without success.

I know the Hayes is...
Forum: Hardware mods 27 March 2015, 16:08
Replies: 53
Views: 7,702
Posted By clh333
Thank you for the suggestion. Reading the DMS...

Thank you for the suggestion. Reading the DMS documentation it states that in EXTREME circumstances this option may be needed: "Generally you will rarely if ever need to use this option." So I...
Forum: Hardware mods 26 March 2015, 16:03
Replies: 53
Views: 7,702
Posted By clh333
I am now booting from a floppy: v.3.8 of...

I am now booting from a floppy: v.3.8 of SupraBoot. Part of the boot sequence offers to run SupraHDTools, which I accept, and with that I confirm that the HD and ZIP disk are mounted. If I skip...
Forum: Hardware mods 25 March 2015, 17:34
Replies: 53
Views: 7,702
Posted By clh333
I have a socketed daughterboard. I just don't...

I have a socketed daughterboard. I just don't know if the controller has the ability to read the higher density memory, or again perhaps the limitation is in ROM; i.e. never looks above 2 Mb.
...
Forum: Hardware mods 25 March 2015, 03:25
Replies: 53
Views: 7,702
Posted By clh333
As a final note: I reached my objective today, by...

As a final note: I reached my objective today, by recognizing, formatting, mounting and addressing an Iomega Zip 100 drive attached to the Amiga 500 through its Supra 500 SCSI interface.

To do so...
Forum: Hardware mods 24 March 2015, 22:07
Replies: 53
Views: 7,702
Posted By clh333
This is a little off the thread but pertinent to...

This is a little off the thread but pertinent to the Supra 500 interface.

The pre-XP board used 16 1x1Mb RAM ICs to attain 2 Mb. expansion RAM. The XP board used 16 1x4Mb. ICs to attain 8 Mb...
Forum: Hardware mods 24 March 2015, 21:55
Replies: 53
Views: 7,702
Posted By clh333
I have three Series II (1.09f) disks: Boot, Tools...

I have three Series II (1.09f) disks: Boot, Tools and RAM.

When I run the SupraChkRom utility that is on the Version 3.8 Supra Boot disk, having booted from that disk, I get the following:
...
Forum: Hardware mods 24 March 2015, 18:28
Replies: 53
Views: 7,702
Posted By clh333
Both addresses extracted and put into archive...

Both addresses extracted and put into archive SBROM3.lha, uploaded to zone today 12:25 EDT.

-CH-
Forum: Hardware mods 23 March 2015, 23:07
Replies: 53
Views: 7,702
Posted By clh333
With the cable attached but power to the disk off...

With the cable attached but power to the disk off the Amiga does not boot. It goes to a cyan screen repeatedly and gets no further. Without the cable attached, of course, there is not path to the...
Forum: Hardware mods 23 March 2015, 20:28
Replies: 53
Views: 7,702
Posted By clh333
With the Supra interface plugged into the A500...

With the Supra interface plugged into the A500 but the cable to the drive housing unattached, the Amiga was unable to boot: Got to a gray screen and no farther. With the cable attached but power to...
Forum: Hardware mods 23 March 2015, 20:16
Replies: 53
Views: 7,702
Posted By clh333
I obtained the software packages, ran /...

I obtained the software packages, ran / unarchived them and invoked TSGUI. In the raw mode, with the supradevice selected, unit selector only saw unit 0; there was no other unit listed. Unit 0 is...
Forum: Hardware mods 23 March 2015, 16:43
Replies: 53
Views: 7,702
Posted By clh333
Thank you all for your assistance! I had...

Thank you all for your assistance!

I had tried to access the zone but was unsuccessful and thought it was because I was not authorized, as the error message suggested. Didn't realize I had to...
Forum: Hardware mods 22 March 2015, 20:05
Replies: 53
Views: 7,702
Posted By clh333
Thank you for your reply and for your...

Thank you for your reply and for your suggestions.

The Supra unit is a Supra 500, not an XP, unfortunately. In retrospect it would have been smart to spring for more RAM and a bigger HD. The...
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