Re: Laser 128 Questions

[Kevin Dady <kevin@hackaday.com>]

On May 23, 5:09 pm, Steven Hirsch <snhir...@gmail.com> wrote:
> Has anyone ever disassembled the ROM on one of these?  I'm finding that the
> firmware for the external disk port (Slot 7) does not recognize or work with
> intelligent SmartPort devices (e.g. SPVHD or Unidisk 3.5).
>
> This is the same behavior as the newer VTech (Central Point) disk controller
> cards.  There, I have had success with retrofitting an older image to get
> Unidisk support.
>
> I have a feeling I can overlay this into the Laser system ROM, since they use
> the same ASIC chip as drive controller.  I'm not sure how they map the single
> EPROM to cover the standard system ROM and slot ROM / C800 expansion for the
> various slots.  Can probably figure this out by lots of disassembly and a bit
> of luck, but thought I'd ask if anyone had already done so.
>
> I find it rather odd that the Laser cannot handle intelligent drives, while
> the earlier Apple //c can.
>
> Steve

not that odd, the original rom //c cant handle them either