[ECOS] more booting from ix86 floppy

[ECOS] more booting from ix86 floppy

[Kåre Särs]

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Hi

I have used RedBoot and GDB to run and debug a program that uses more than 
640kb of ram, and now I want to run this program directly from a floppy.

When I run the program with RedBoot CYG_HAL_STARTUP is set to RAM (for the 
program), and I get access to extended memory, but when I want to boot from a 
floppy I have to set CYG_HAL_STARTUP to FLOPPY and then I loose the extended 
memory.

FLOPPY->mlt_i386_pc_floppy.ldi->only 655360 bytes ram

I know I can still use the extended memory but not with malloc.

Is there an easy way to boot directly from the floppy and still have the 
extended memory.

Thankyou!

    KÃ¥re

Re: [ECOS] more booting from ix86 floppy

[Jonathan Larmour]

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Kåre Särs wrote:
> 
> Hi
> 
> I have used RedBoot and GDB to run and debug a program that uses more than
> 640kb of ram, and now I want to run this program directly from a floppy.
> 
> When I run the program with RedBoot CYG_HAL_STARTUP is set to RAM (for the
> program), and I get access to extended memory, but when I want to boot from a
> floppy I have to set CYG_HAL_STARTUP to FLOPPY and then I loose the extended
> memory.
> 
> FLOPPY->mlt_i386_pc_floppy.ldi->only 655360 bytes ram
> 
> I know I can still use the extended memory but not with malloc.
> 
> Is there an easy way to boot directly from the floppy and still have the
> extended memory.

You could add another memory region called "ram2" or something using the
Memory layout Tool, and then create a user-defined section within that
called "heap2". It should be used by malloc by default.

Jifl
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