[Coco] cp/m emulator Disk

[Luis Antoniosi (CoCoDemus)]

You need 56K of TPA to run proper applications. the emulator is less than
8K. And for performance sake I do not make Y calculations, I assume Y=0 on
level 2 using 56K as requested in the header. also, you don't want it
running on 1Mhz or 6809 modes. A native 6309 is strongly desired.

I run the z-80 memory space on 6809 memory, but I don't start it at zero,
but $100 instead. This allows me to have all registers and variables in
page 0 mode. the acessing a memory position for like

LD A,(DE)

is

ldx <DE
lda $100,x
sta <A

I cannot have Y in this account. It will make things twice slow.

the code/sample disks has been uploaded to color computer archive. Soon
they will be available.



Luis Felipe Antoniosi



On Sat, Apr 4, 2015 at 11:36 PM, Stephen H. Fischer <
SFischer1 at mindspring.com> wrote:

> Yes, but I worry about "/w" working. Tandy's last release of OS-9 Level-II
> may not have the window descriptors set up right. They were coded by thugs
> who never should be allow to punch cards. The worse part of OS-9 Level-II.
>
> Any reason that OS-9 Level-II on a CoCo is needed.
>
> Will cpm run on a CoCo 2 with OS-9 Level-I?
>
> SHF
>
> ----- Original Message -----
> From: "Luis Antoniosi (CoCoDemus)" <retrocanada76 at gmail.com>
> To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
> Sent: Saturday, April 04, 2015 8:13 PM
> Subject: Re: [Coco] cp/m emulator Disk
>
>
> > This will do the trick: only one shell is kept. After closing CPM the
> > window is dismissed and only one shell remains.
> >
> > (display 63 68 78 20 ;pwd;echo load cpm) ! shell
> > (display 1b 20 2 0 0 50 18 3 2 2 1b 21; shell i=/1 ex cpm ws.com&) >/w
> >
> >
> > Luis Felipe Antoniosi
>
>
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