FM Frontpanel

MIDIbox FM
1

Hi all,

at the moment i am designing the frontpanel for the opl3 synth, and i am asking if it´s possible to change the buttons for the instrument / operator selection.

my idea is to have for instrument 1-4 and operator 1-4 a dedicated button, so instead of five buttons , eight buttons.

i know that i need three more digital inputs and that means an extra Din chip, but that would be ok for me.

since i don´t build anything yet, i don´t know if this has any advantages in handling the synth, but it would defenitly better fit in my frontpanellayout.

thanks

chriss

2

Hi Chriss,

this should be possible by changing the CS_MENU_BUTTON_InsOP_Cont in “cs_menu_buttons.inc” . Currently it either moves the pointer to CS_MENU_SELECTED_INS_FLAGS or CS_MENU_SELECTED_OP_FLAGS into FSR0 depending on the CS_MENU_MODE_INS_OP flag…

Quick change: add four additional OP button functions and set the CS_MENU_MODE_INS_OP flag there. Clear this flag within the instrument button functions

Best Regards, Thorsten.

3

hi thorsten,

cool that this is possible.

as always i don´t know what to do exactly…

i just pasted the original code here:

CS_MENU_BUTTON_InsOP1

movlw 1 << 0

rgoto CS_MENU_BUTTON_InsOP_Cont

CS_MENU_BUTTON_InsOP2

movlw 1 << 1

rgoto CS_MENU_BUTTON_InsOP_Cont

CS_MENU_BUTTON_InsOP3

movlw 1 << 2

rgoto CS_MENU_BUTTON_InsOP_Cont

CS_MENU_BUTTON_InsOP4

movlw 1 << 3

;; rgoto CS_MENU_BUTTON_InsOP_Cont

CS_MENU_BUTTON_InsOP_Cont

movwf TMP1

;; pointer to _FLAGS register which should be modified in FSR0

lfsr FSR0, CS_MENU_SELECTED_INS_FLAGS

btfsc CS_MENU_MODE, CS_MENU_MODE_INS_OP

lfsr FSR0, CS_MENU_SELECTED_OP_FLAGS

and now i would put in four extra Op_buttons like this:

CS_MENU_BUTTON_OP1 for example.

but how to set the CS_MENU_MODE_INS_OP flag there? like this?

CS_MENU_BUTTON_OP1

lfsr FSR0, CS_MENU_SELECTED_OP_FLAGS

rgoto CS_MENU_MODE_INS_OP

and how can i clear the flag within the instrument button functions? like this?

lfsr FSR0, CS_MENU_SELECTED_INS_FLAGS

btfsc CS_MENU_MODE, CS_MENU_MODE_INS_OP

when i do that i get following error:

MIDIBO_FM_V1_0 MODIFIED\MACROS.H 161 : Argument out of range (-6901 not between -1024 and 1023)

MIDIBO_FM_V1_0 MODIFIED\MACROS.H 161 : Argument out of range (-6904 not between -1024 and 1023)

MIDIBO_FM_V1_0 MODIFIED\MACROS.H 161 : Argument out of range (-6907 not between -1024 and 1023)

thanks

chriss

4

Hi Chriss,

undo your changes and add following lines to cs_menu_button.inc

CS_MENU_BUTTON_Ins1
bcf	CS_MENU_MODE, CS_MENU_MODE_INS_OP
movlw	1 << 0
rgoto	CS_MENU_BUTTON_InsOP_Cont

CS_MENU_BUTTON_Ins2
bcf	CS_MENU_MODE, CS_MENU_MODE_INS_OP
movlw	1 << 1
rgoto	CS_MENU_BUTTON_InsOP_Cont

CS_MENU_BUTTON_Ins3
bcf	CS_MENU_MODE, CS_MENU_MODE_INS_OP
movlw	1 << 2
rgoto	CS_MENU_BUTTON_InsOP_Cont

CS_MENU_BUTTON_Ins4
bcf	CS_MENU_MODE, CS_MENU_MODE_INS_OP
movlw	1 << 3
rgoto	CS_MENU_BUTTON_InsOP_Cont

CS_MENU_BUTTON_OP1
bsf	CS_MENU_MODE, CS_MENU_MODE_INS_OP
movlw	1 << 0
rgoto	CS_MENU_BUTTON_InsOP_Cont

CS_MENU_BUTTON_OP2
bsf	CS_MENU_MODE, CS_MENU_MODE_INS_OP
movlw	1 << 1
rgoto	CS_MENU_BUTTON_InsOP_Cont

CS_MENU_BUTTON_OP3
bsf	CS_MENU_MODE, CS_MENU_MODE_INS_OP
movlw	1 << 2
rgoto	CS_MENU_BUTTON_InsOP_Cont

CS_MENU_BUTTON_OP4
bsf	CS_MENU_MODE, CS_MENU_MODE_INS_OP
movlw	1 << 3
rgoto	CS_MENU_BUTTON_InsOP_Cont
[/code]









Best Regards, Thorsten.
5

thanks thorsten,

did try it with the MBsid and it works.

just put in the OPbuttons into the cs_menu_io_tables.inc and assigned the 5th DIN register to them, after setting the

;; initialize the shift registers

movlw 0x04 ; use up to 4 shift registers

to

;; initialize the shift registers

movlw 0x05 ; use up to 5 shift registers

everthing seems to work

thanks again, now i can go one building my frontpanel

chriss