[hatari-devel] DSP debug minor problems

[Laurent Sallafranque]

Hello Eero,

I've just seen that you've changed things into dsp.c debug code.
You've removed the PC register (it's not really a dsp register as it's 
an implicit register),
but I added it because it's useful when debugging to do a "dr pc=adr"


I think there's just to add something like :

        /* 16-bit status register */
        { "PC",  &dsp_core.pc,  16, BITMASK(16) },


I'm not sure of the SSH and SSL code you added :

        { "SSH", &dsp_core.registers[DSP_REG_SP],  32, BITMASK(16) },
        { "SSL", &dsp_core.registers[DSP_REG_SP],  32, BITMASK(16) },
        { "SP",  &dsp_core.registers[DSP_REG_SP],  32, BITMASK(6) },

ssh and ssl are saved into a stack (15).
the position into the stack is given by SP.

Example :

SSH            SSL            SP
0                     0            0
123456      abcdef        1
222222      bbbbbb      2
0                     0            3
0                     0            4
0                     0            5
...
0                     0            15

SSH + SSL is called the SS (32 bits)
SSH is at bits (32-16)
SSL is at bits (15-0)

if SP=5, SSH value is SS[5] (bits 32-16) and SSL value is SS[5] (bits 15-0)

Regards
Laurent