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Search: Posts Made By: alexh
Forum: support.Hardware Today, 01:07
Replies: 5
Views: 86
Posted By alexh
There's no need for swap bytes surely? 27C1000...

There's no need for swap bytes surely? 27C1000 are 8-bit ROMs. By byte swapping all you’re doing is mixing up odd and even. This is bad advice

As for how to swap even and odd, all eprom...
Forum: Coders. Asm / Hardware 28 October 2020, 18:14
Replies: 13
Views: 971
Posted By alexh
Out of curiosity how does FBLIT work and is it...

Out of curiosity how does FBLIT work and is it relevant for this conversation?

http://aminet.net/package/util/boot/fblit

Someone looked within the AmigaOS gfx routines to see which used the...
Forum: Nostalgia & memories 28 October 2020, 13:05
Replies: 23
Views: 995
Posted By alexh
A600's command a good price. Gone are the days...

A600's command a good price. Gone are the days you could get two for £10
Forum: support.Hardware 28 October 2020, 12:59
Replies: 1
Views: 139
Posted By alexh
I have seen many many of these sold over the...

I have seen many many of these sold over the years but never seen anyone sell any documentation nor explain how it was flashed either with HW or SW.
Forum: support.Hardware 27 October 2020, 01:39
Replies: 2
Views: 158
Posted By alexh
The Pioneer A06s, 106s, 121s all look really good...

The Pioneer A06s, 106s, 121s all look really good in A2000 if you can get one cheap.

Remember A2000 has no built in IDE. Most accelerators have SCSI. In which case a pioneer 303s
Forum: Nostalgia & memories 27 October 2020, 01:24
Replies: 23
Views: 995
Posted By alexh
1999 I swapped out the A3000D that I think was...

1999 I swapped out the A3000D that I think was used to develop Birds of Prey at Argonaut. It had been given to me the year before during a clear out. It was a 2+4MB 25MHz model with KS1.4 and a Video...
Forum: Nostalgia & memories 26 October 2020, 16:58
Replies: 9
Views: 895
Posted By alexh
I won a years supply of all Sinclair Spectrum...

I won a years supply of all Sinclair Spectrum Mastertronic games in a Your Sinclair competition, just at the time that they stopped making games for the Spectrum. I think they must have felt sorry...
Forum: Retrogaming General Discussion 26 October 2020, 16:24
Replies: 48
Views: 2,280
Posted By alexh
I thought I had a problem as I had one of pretty...

I thought I had a problem as I had one of pretty much everything ever and I went to buy a replacement CDTV from someone near Swindon UK and their garage was piled to the roof with Amiga's, Atari STs,...
Forum: support.WinUAE 26 October 2020, 16:20
Replies: 22
Views: 832
Posted By alexh
Works fine here on a very low spec Win10 Laptop. ...

Works fine here on a very low spec Win10 Laptop.

Like the others I suspect user error.
Forum: project.WHDLoad 26 October 2020, 13:36
Replies: 11
Views: 558
Posted By alexh
Thanks to all WHDLoad developers and contributors...

Thanks to all WHDLoad developers and contributors now and in the past
Forum: support.Hardware 25 October 2020, 23:24
Replies: 98
Views: 2,235
Posted By alexh
Thanks very much for all your help. I guess the...

Thanks very much for all your help. I guess the only way forward is to re-source some of the modules in Kickstart / Extended and re-code. Which won't be easy as AmigaOS device drivers are devilishly...
Forum: support.Hardware 25 October 2020, 21:35
Replies: 98
Views: 2,235
Posted By alexh
The TF536 almost certainly implements a Gayle...

The TF536 almost certainly implements a Gayle like IDE interface at the correct addresses so that the standard Kickstart IDE driver works.

Booting from a SCSI HDD connected to the CDTV SCSI...
Forum: support.Hardware 25 October 2020, 17:50
Replies: 98
Views: 2,235
Posted By alexh
Looks like it.

Looks like it.
Forum: support.Hardware 25 October 2020, 11:05
Replies: 98
Views: 2,235
Posted By alexh
I found time to setup WinUAE and install RomSplit...

I found time to setup WinUAE and install RomSplit by Doobrey.

The byte offset of the Allocmem TF said he patched in cdtv.devce 35.14 is byte offset $491 in the extracted file (I've updated my...
Forum: support.Hardware 25 October 2020, 10:59
Replies: 98
Views: 2,235
Posted By alexh
Toni thanks for the correction. So JOTD...

Toni thanks for the correction.


So JOTD that could explain why it worked? If the Z3 fast is not mapped, then the OS would only use CHIP RAM? Which we know works.

I think when testing this...
Forum: support.Hardware 25 October 2020, 10:02
Replies: 98
Views: 2,235
Posted By alexh
I don't think the Z3 FAST RAM option in WinUAE...

I don't think the Z3 FAST RAM option in WinUAE requires any OS support. It refers to the fact that it is 32-bit wide and mapped to what later would be the Z3 address space.
Forum: support.Hardware 24 October 2020, 23:46
Replies: 98
Views: 2,235
Posted By alexh
You didn't follow the instructions. You didn't...

You didn't follow the instructions. You didn't set a width of 2 bytes *AND* you loaded the wrong file!
Forum: support.Hardware 24 October 2020, 19:38
Replies: 98
Views: 2,235
Posted By alexh
Nice. I might try and see if it still works as...

Nice. I might try and see if it still works as expected in WinUAE. (If you've not already)


I think bartekmalysz needs to try just a patched cdtv.device and cdfs.library first.

Plus I'm not...
Forum: support.Hardware 24 October 2020, 19:23
Replies: 98
Views: 2,235
Posted By alexh
No that is the v2.30 ROM file offset not the...

No that is the v2.30 ROM file offset not the cdtv.device file offset. (A file offset is how many bytes into the file the location you want to modify is)

The byte you're going to change in...
Forum: support.Hardware 24 October 2020, 19:06
Replies: 98
Views: 2,235
Posted By alexh
You could try the patch to cdtv.device ($490 :...

You could try the patch to cdtv.device ($490 : $7202) as well?

Load the cdtv.device file into HxD (or another Hex editor)

select view->Bytes per ROW->2 (This is a HxD setting)

Scroll down...
Forum: support.Hardware 24 October 2020, 18:01
Replies: 98
Views: 2,235
Posted By alexh
Don't be surprised if this doesn't work without...

Don't be surprised if this doesn't work without patching cdtv.device.

TF today in a thread over on exxos said he never tested that one byte in cdfs.library on it's own.

This is the only other...
Forum: support.Hardware 24 October 2020, 17:53
Replies: 98
Views: 2,235
Posted By alexh
I thought this was what we were attempting? ...

I thought this was what we were attempting?

Goal #3: access the CD after booting from hard drive => rom hack & burn


That was never achieved by TF. Even after patching every(?) allocmem...
Forum: support.Hardware 24 October 2020, 17:41
Replies: 98
Views: 2,235
Posted By alexh
After the ROM has been patched remus won't load...

After the ROM has been patched remus won't load it. I didn't realise that would happen.
Forum: support.Hardware 24 October 2020, 16:59
Replies: 98
Views: 2,235
Posted By alexh
It's not that. You're using the tool incorrectly....

It's not that. You're using the tool incorrectly. You pass it the full extended kickstart ROM v2.3 file, not the sub-files you've extracted from it.

You need to extract them again using...
Forum: support.Hardware 24 October 2020, 15:47
Replies: 98
Views: 2,235
Posted By alexh
It was suspected, and TF still thinks it could be...

It was suspected, and TF still thinks it could be what is preventing the booting from CD with the TF536 enabled.

*AND* resourcing cdtv.device may help changing from the custom controller and...
Forum: support.Hardware 24 October 2020, 14:06
Replies: 98
Views: 2,235
Posted By alexh
I found the patch location ($3824E) and MD5 HASH...

I found the patch location ($3824E) and MD5 HASH (D1145AB3A0F89340F94C9E734762C198) (https://cloanto.com/amiga/roms/getcrc/ceae68d2.html) for v2.07 (see previous post).

The MD5 HASH for v1.0 is...
Forum: support.Hardware 24 October 2020, 13:57
Replies: 98
Views: 2,235
Posted By alexh
cdfs.library not cdtv.device

cdfs.library not cdtv.device
Forum: support.Hardware 24 October 2020, 12:53
Replies: 98
Views: 2,235
Posted By alexh
It is possible to use v2.07 because cdfs.device...

It is possible to use v2.07 because cdfs.device didn't change between v2.07 and v2.30. You just need to know the address to patch, which you can get using RomSplit/Remus...
Forum: support.Hardware 24 October 2020, 11:31
Replies: 98
Views: 2,235
Posted By alexh
Thanks, should help those who want to try this...

Thanks, should help those who want to try this but are not comfortable with hexedit.

If anyone is interested, this script verifies the input file is a valid 2.30 extended ROM (using MD5 hash) and...
Forum: support.Hardware 24 October 2020, 02:25
Replies: 2
Views: 177
Posted By alexh
27C1000 are byte wide EPROMs (unlike 27c400 which...

27C1000 are byte wide EPROMs (unlike 27c400 which are 16-bit) so there's nothing to swap. But you must split them into odd and even (you need two 27C1000)

These EPROMs are great for Atari STe TOS...
Forum: support.Hardware 24 October 2020, 01:18
Replies: 98
Views: 2,235
Posted By alexh
You? The exact details are in my post TF has...

You? The exact details are in my post

TF has replied albeit cryptically



Here could mean my post, that one byte, or it could mean the other patches throughout his thread on exxos as he...
Forum: Retrogaming General Discussion 23 October 2020, 21:34
Replies: 48
Views: 2,280
Posted By alexh
There are value-for-money Amiga's to be had, but...

There are value-for-money Amiga's to be had, but they have moved from eBay to other sales channels. Even Facebook marketplace is getting expensive. Try the local selling forums for your area, free...
Forum: support.Hardware 23 October 2020, 21:14
Replies: 98
Views: 2,235
Posted By alexh
I thought there might be enough information in...

I thought there might be enough information in the CDTV thread over at exxos to patch the ROM rather than require the firmware which patches on the fly?

viewtopic.php?f=76&t=1951&start=30#p23329
...
Forum: support.Hardware 22 October 2020, 20:52
Replies: 98
Views: 2,235
Posted By alexh
Surely you just hand edit the ROM in hex edit and...

Surely you just hand edit the ROM in hex edit and burn into a 27c1000 EPROM to try it out?
Forum: support.Hardware 22 October 2020, 13:05
Replies: 98
Views: 2,235
Posted By alexh
In the original CDTV thread on the exxos forum TF...

In the original CDTV thread on the exxos forum TF lists the addresses of places in the ROMs to be patched.

I believe it is this single location in cdfs.device which when pactched allows the system...
Forum: Coders. Asm / Hardware 19 October 2020, 11:24
Replies: 13
Views: 971
Posted By alexh
Most programs only use a handful of the blitter...

Most programs only use a handful of the blitter functions so a 1:1 emulator of all functions of the blitter would seem to be a bit overkill?

I imagine most late Amiga programs detect the CPU and...
Forum: MarketPlace 17 October 2020, 09:44
Replies: 5
Views: 695
Posted By alexh
Retr0bright. A mix of hydrogen peroxide and TAED....

Retr0bright. A mix of hydrogen peroxide and TAED. Plus UV light (sunlight)
Forum: project.CD32 Conversion 14 October 2020, 23:35
Replies: 7
Views: 742
Posted By alexh
Thank you

Thank you
Forum: support.Hardware 11 October 2020, 17:49
Replies: 226
Views: 8,012
Posted By alexh
The Apollo core is an interesting development....

The Apollo core is an interesting development. Hats off to the developers for producing a product Amiga owners want to buy. The future is interesting though. It’s close source nature means...
Forum: support.Hardware 08 October 2020, 01:29
Replies: 37
Views: 1,324
Posted By alexh
The install disk and parts of the manual are...

The install disk and parts of the manual are linked to in this thread
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