Author: replicant (62.59.52.243)
Date: 02-23-2001 10:35
hmmm... have we started something here?
Well, i'm not very good at assembler. I know how to read 68k assembly language and i wrote a couple of very small porgrams for a philips 68k vme system, but tose weren't a lot more than a couple of flashing leds anyway. But I sure want to give it a try...
about the SCSI interface:
- advantages as i see it:
* can be use on any tos compatible since every tos compatible can be equipted with an scsi interface
* surely fast enough
* dma capable
- disadvantages:
* hard to develop: because you have to have a profound knowledge about the scsi protocol. You can't just access the scsi port throught assembly, you would have to adress the scsi hdd driver OR write assembly to program the scsi controller through the ST's ACSI port (e.g. SCSILINK II).
It would be easier if all ataries would have an universal expensionbus as the ISA or PCI bus (puke), but they don't.
MIDI isn't fast enough for the streaming,
the printerport -> maybe,
the ROM port -> not universal...
hmmm, we can solder the thing right on the 68000, ;-), that would be the easiest way of designing it. But i'm sure HADES060, TT or falcon owners don't want ro solder on their 68030's & 060's. We could design an ISA / VME / FalcExp adapter for them... but that would incorporate a loot of work too.
The problem when using SCSI is to get the exact timing working. We could use a cyclic hardwarerambuffer wich is filled up by the scsi port and emptied by the decoder. That'll do.
So now we need information about how SCSI on atari works. Any help from the programmers of HDDriver or SCSItoolsHUSHI is very welcome.
An mp3 ENcoderchip would be very nice, but aren't they to expensive?
Anyway, which motorolachip do you want to use? Than I could have a look at the datasheet of it...
greetz, ReplicaNT
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