VBCC + vlink = ROM?

[doc_block]

I'm new to Jaguar development (hi), and am looking for a way to get VBCC and vlink to compile/link for cartridge address space instead of to RAM, but I can't seem to get it to work.

 

Obviously, RAM is better + faster for testing, but it'd be nice to know how to make it compile/link at 0x802000 instead of 0x4000 (final game is too big for just RAM, want to take the Jag to a friend's house to show them what I made without lugging a computer along with it, etc.)

 

Here's what I've got so far.

 

Test program (main.c):

#include <jaglib.h>
#include <jagcore.h>
#include <stdio.h>
#include <stdlib.h>

int main()
{
	puts("Hello, Jaguar world!");

	for(; {
		// live forever
	}
}

Compiled with

vc +jaguar-cart.cfg -c99 main.c -o hello-cart.jag 

jaguar-cart.cfg is exactly the same as the jaguar config file that comes with VBCC, but supplies a linker script for vlink:

MEMORY {
	RAM (!rx) : ORIGIN = 0x004000, LENGTH = 2032K
	ROM (rx)  : ORIGIN = 0x802000, LENGTH = 6290944
}

SECTIONS {
	.text: {
		*(.text CODE text)
	} > ROM

	. = ALIGN(32);
	.data: {
		_DATA_START = .;
		VBCC_CONSTRUCTORS
		*(.data DATA data)
		_DATA_END = .;
		_DATA_INIT = LOADADDR(.data);
	} > RAM AT>ROM

	.bss (NOLOAD): {
		_BSS_START = .;
		*(.bss BSS bss)
		*(COMMON)
		_BSS_END = .;
	} > RAM
}

Compiling and flashing to the Skunkboard works, but all I get is a blank screen. Compiling for RAM the normal way and launching with jcp -c hello-ram.jag works fine and shows the text as expected.

 

What am I missing? Thanks for any help!

Edited October 25, 2017 by doc_block