30 October 2019, 21:41 | #1 |
Registered User
Join Date: Oct 2019
Location: UK
Posts: 107
|
What is this rom ive bought please?
this is the one i bought from ebay
https://www.ebay.co.uk/itm/Kickstart...UAAOSwJiBcQNMF on one of the rom chips it says dual boot 1.3 and 3.1 how do i use 1.3 on it?? is it even a legit 3.1 rom? (it does have the cloanto sticker and licence key on it) Last edited by liquidsmoke; 30 October 2019 at 22:42. |
30 October 2019, 22:50 | #2 |
Registered User
Join Date: Jan 2019
Location: /home
Posts: 122
|
Where did you read "dual boot"? Looks like an ordinary A1200 3.1 ROM to me.
Edit: Just found it on the label. They sell similar ROMs (without "dual boot") at https://amigastore.eu/en/16-rom-31-a...two-chips.html If you can register the ROM with cloanto, they should be fine. I have no idea, how that "dual" thing should work. You would need at least some PCB to switch address lines of the ROMS Last edited by R4M; 30 October 2019 at 22:58. |
30 October 2019, 23:12 | #3 |
Registered User
Join Date: Feb 2012
Location: United Kingdom
Posts: 3,173
|
Unless it came with adaptor for this e.g. holding the reset keys makes it cycle through the KS versions.
|
30 October 2019, 23:58 | #4 |
Registered User
Join Date: Oct 2019
Location: UK
Posts: 107
|
|
31 October 2019, 06:10 | #5 |
Registered User
Join Date: Feb 2012
Location: United Kingdom
Posts: 3,173
|
|
31 October 2019, 11:12 | #6 |
Registered User
Join Date: Feb 2007
Location: Melbourne, Australia
Age: 41
Posts: 3,772
|
You can select the bank on the dual ROM by simply using a switch connected to pin 1.
Wouldn't the other 3.1 ROM interfere with 1.3 though? Maybe it's been patched to ignore it? https://www.tsb.space/knowledge-base...-27c800-eprom/ |
31 October 2019, 15:58 | #7 |
Registered User
Join Date: Jun 2009
Location: Dublin, then Glasgow
Posts: 6,334
|
But that's not the ROM that's pictured in the eBay listing - the extra address line needs extra pins, whereas the photo shows the same pins free as 512kB ROMs.
|
31 October 2019, 19:26 | #8 |
Registered User
Join Date: Oct 2019
Location: UK
Posts: 107
|
the instructions that came with the chips do say to leave the two left holes free on the sockets.
i guess the chip is just mislabeled and its a 3.1 only rom? |
31 October 2019, 19:46 | #9 |
Registered User
Join Date: Feb 2012
Location: United Kingdom
Posts: 3,173
|
Why not contact seller to clarify as they have created the ROM I'd imagine... and hopefully you'll get clarification in terms of what is on the ROMS.
|
01 November 2019, 11:05 | #10 |
Registered User
Join Date: Feb 2007
Location: Melbourne, Australia
Age: 41
Posts: 3,772
|
|
01 November 2019, 14:38 | #11 |
Registered User
Join Date: Oct 2019
Location: UK
Posts: 107
|
i fitted the rom. its v40.68 listed in sysinfo. which appears correct to me.
pulling the old roms isnt that easy i found. even with a puller i bought on ebay they were stubborn and all sorts of creaking and grinding could be heard. |
01 November 2019, 15:21 | #12 |
-
Join Date: Jul 2003
Location: Helsinki / Finland
Age: 43
Posts: 9,861
|
Creaking sounds are to be expected if the chips have not been removed for decades. It's just the legs scraping on the socket contacts when they are being pulled out from the socket.
Most DIP pullers are not very good, especially when used with those old chips that have been in the socket since the machine was made. I find a thin flat bladed screwdriver works best, 1mm at a time alternating between the ends of the socket. You just need to be careful that the tip of the screwdriver does not hit the circuit board. |
01 November 2019, 18:06 | #13 |
Registered User
Join Date: Jun 2009
Location: Dublin, then Glasgow
Posts: 6,334
|
Indeed - in fact, most cheap DIP pullers you find on eBay and the likes aren't even meant for chips the size of the Kickstart ROMs, and can badly damage them by suddenly losing grip at one end.
|
01 November 2019, 20:09 | #14 | |
Registered User
Join Date: Oct 2019
Location: UK
Posts: 107
|
Quote:
i totally didnt do that and scratch the side and top of one of the rom chips anyone recommend a good puller on amazon or wherever incase i ever need to swap them out again? (maybe for the 3.1.4 roms) |
|
01 November 2019, 21:04 | #15 |
Registered User
Join Date: Jun 2009
Location: Dublin, then Glasgow
Posts: 6,334
|
As Jope says, a flat screwdriver will do a fine job once you take your time with it, keep the chip level by working from both ends, and make sure to lever against the chip socket and *not* the PCB underneath, which will damage the traces.
|
02 November 2019, 13:31 | #16 |
Registered User
Join Date: Sep 2007
Location: Stockholm
Posts: 4,332
|
Instead of levering the screw driver, turn it back and forth.
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
ive uploaded two magazines | bugsthor | AMR news | 4 | 19 January 2013 09:40 |
Complete novice: ive got my A600 running,now what? | jt5566 | New to Emulation or Amiga scene | 5 | 12 September 2011 19:27 |
Ive really just noticed that -: | blade002 | Amiga scene | 17 | 03 October 2007 00:50 |
Ive got an Amstrad GX4000 for sale... | Big-Byte | MarketPlace | 7 | 10 October 2003 21:52 |
Ive got some games to sell... | Big-Byte | MarketPlace | 5 | 24 August 2003 16:06 |
|
|