sqward wrote:Is it a custom chip though? For 20k units? Would it save them any money?
mpattonm wrote:There is no Motorola datasheet AFAIK. One of the options to cross-reference my attachement is Falcon schematic, for example.
sqward wrote:However, Falcon schematic says nothing much about the location of VCC and GND pins. So I kind of hope that TXD and RXD pins are still there undiscovered
sqward wrote:Maybe I'll just explain what I was looking to achieve: regular 56001 has a async serial interface (SCI) which woudn't be connected in Falcon if only regular 56001 was used. I was hoping to run that serial port with a pair of wires another unused async serial port in MFP. This would help me with debugging my DSP software.
czietz wrote:Welcome to the world of custom (or semi-custom) chips. For a lot of the ICs in the products that I develop at work, you won't find any public documentation, either.
sqward wrote:Hatari's DSP emulation in general is in quite poor state for my needs. My last demo doesn't work for several reasons (https://www.pouet.net/prod.php?which=78884):
* 030 emulation timings are off
* SDMA emulation is sketchy (handshake mode seems to only work with Norig mp2 player?)
* No DSP timer emulation
* No host port interrupts on DSP side
I Hatari can get there though.
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