Search found 40 matches

by alexh
Mon Nov 09, 2020 10:44 pm
Forum: SOFTWARE
Topic: how can i have the notes of a sequencer payed by YM2149F
Replies: 5
Views: 218

Re: how can i have the notes of a sequencer payed by YM2149F

I was sure there were tools to convert STSound (a recording stream of YM registers) into MIDI to play on a PC but i can't find them today. I had conversions of lots of mad max Thalion songs, too many and too accurate tempo to have been converted by hand. But did you want to use the ST as a Midi inst...
by alexh
Thu Nov 05, 2020 9:30 pm
Forum: AMIGA HARDWARE HELP
Topic: New accelerator for a Amiga, Atari and others
Replies: 19
Views: 1452

Re: New accelerator for a Amiga, Atari and others

If this is based on the TG68 core.. That won't work on Atari.. So I doubt this one will either. Looks like a Amiga booster not Atari ? It might not now but it can and will. I have code for the bus ARB that i will share with Mike if he wants. He will appreciate that. I think it needs everything you ...
by alexh
Thu Nov 05, 2020 4:07 pm
Forum: HARDWARE DISCUSSIONS
Topic: New 680x0 FPGA by MikeS of FPGArcade
Replies: 1
Views: 215

New 680x0 FPGA by MikeS of FPGArcade

Mike has been trying to bring the MiniMig 68k HDL (TG68k) to an Amiga FPGA as a low cost alternative to Vampire Apollo Core. The preliminary work is complete, the 68020 compatible prototype is getting 68040@25MHz like artificial benchmarks. Two days ago he release a Physical 3D design of what it wil...
by alexh
Fri Oct 30, 2020 7:41 am
Forum: TF330
Topic: TF CD32 Riser Revision 2 Design Complete
Replies: 507
Views: 49062

Re: TF CD32 Riser Revision 2 Design Complete

The most significant issue is how to select a floppy disk image.... options... 1. implement some kind of display a'la gotek. 2. some kind of OSD overlay (needs a board respin). 3. dont display anything. When Jeff of HxC was creating the first stand alone FDDE we discussed many times the aesthetics ...
by alexh
Mon Oct 26, 2020 1:47 pm
Forum: CHAT FORUM
Topic: Raspberry Pi m68k emulator running in a real Amiga
Replies: 6
Views: 467

Re: Raspberry Pi m68k emulator running in a real Amiga

There are enough pins on the SMI for the CPLD to re-create the full 32-bit 680x0 bus with interrupts, exceptions etc?
by alexh
Sun Oct 25, 2020 3:28 pm
Forum: TF536
Topic: TF536 and CDTV's cd drive
Replies: 12
Views: 835

Re: TF536 and CDTV's cd drive

JOTD has updated the python script for patching the original CDTV Extended ROM v2.30 with all the allocmem locations TF identified. https://github.com/jotd666/amiga68ktools/blob/master/tools/patch_cdtv_rom.py Toni Wilen of WinUAE has seen the discussions about this issue and he notes he was in the p...
by alexh
Sat Oct 24, 2020 2:49 pm
Forum: TF536
Topic: TF536 and CDTV's cd drive
Replies: 12
Views: 835

Re: TF536 and CDTV's cd drive

There is a list of about 30 locations that need patched in the 2.3 rom. Ok. Thanks. I will extract them from the other thread. My skills with 68k IDA Pro are not good enough to re-produce this work I am afraid. Realistically if you want good CDTV support then someone needs to rewrite or at least he...
by alexh
Sat Oct 24, 2020 12:13 pm
Forum: TF536
Topic: TF536 and CDTV's cd drive
Replies: 12
Views: 835

Re: TF536 and CDTV's cd drive

JOTD of JST/WHDload fame has created a python script patcher based on TFs work. It is a blind patcher with an added check for the MD5 HASH to make sure it is a valid original v2.30 CDTV ROM before changing the one byte in cdfs.library v24.9 that TF found. https://github.com/jotd666/amiga68ktools/blo...
by alexh
Sat Oct 24, 2020 11:51 am
Forum: TF536
Topic: TF536 and CDTV's cd drive
Replies: 12
Views: 835

Re: TF536 and CDTV's cd drive

While I don't recommend using CDTV Extended Kickstart v2.07 (better to use the Cloanto v2.30) the same version of cdfs.library v24.9 is in v2.07 as was in v2.30.

So it was easy to find the equivalent address for the byte that TF found within v2.30

It appears at offset $3824E in v2.07 ROMs
by alexh
Fri Oct 23, 2020 11:24 pm
Forum: TF536
Topic: TF536 and CDTV's cd drive
Replies: 12
Views: 835

Re: TF536 and CDTV's cd drive

Thanks for the reply. A patch script sounds good.

Can you tell us if it just this one location cdfs.device that is required to use the CD drive in Workbench after booting?

There were lots of other allocmem's you found in the other thread, ones that were in cdtv.device too?

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