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remove unused code

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This commit is contained in:
Wolfgang Hottgenroth 2024-03-18 13:01:23 +01:00
parent feed11f977
commit 326d0f66b0
1 changed files with 0 additions and 61 deletions
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61
rgb-driver/main.S
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@ -64,8 +64,6 @@ screendata:
.endr
screendataend:
.byte 0xff
data_forward_pointer:
.word 0
;; .text is the name of the section, it is a hint for the linker to
@ -136,70 +134,20 @@ init:
;; ----------------------------------------------------
mainloop:
call #forwardscreen_init
call #resetscreen
mainloop_draw:
call #drawscreen
;; signal waiting for data
set_signal_waiting_for_data
;call #forwardscreen
;call #wait
call #receivedata
;; data has been received, clear signal
clear_signal_waiting_for_data
jmp mainloop_draw
;; ----------------------------------------------------
wait:
push r11
push r12
mov.w #0x0040, r11
wait_continue_1:
mov.w #0xffff, r12
wait_continue_2:
dec.w r12
jnz wait_continue_2
dec.w r11
jnz wait_continue_1
pop r12
pop r11
ret
;; ----------------------------------------------------
forwardscreen_init:
mov.w #screendata, &data_forward_pointer
ret
;; ----------------------------------------------------
forwardscreen:
push r8
push r10
mov.w #screendataend, r8
mov.w data_forward_pointer, r10
mov.b #_off, @r10
inc.w r10
mov.b #_blue, @r10
cmp.w r10, r8
jnz forwardscreen_done
mov.w #screendata, r10
forwardscreen_done:
mov.w r10, data_forward_pointer
pop r10
pop r8
ret
;; ----------------------------------------------------
resetscreen:
push r7
@ -231,11 +179,6 @@ receivedata_wait_for_control_octet:
;; get control or address octet from buffer register
mov.b UCB0RXBUF, r9
;; check whether value == 0xff (wait for the whole
;; set of data to fill the screendata)
cmp.b #0xff, r9
;; receive all data
jz receivedata_wait_for_all_data
;; check whether value == 0xfe (no more data)
cmp.b #0xfe, r9
;; no more data
@ -253,10 +196,6 @@ receivedata_wait_for_octet:
;; next address/control octet
jmp receivedata_wait_for_control_octet
receivedata_wait_for_all_data:
;; this is a bit dangerous, if the application controller
;; sends too few data, we are in a dead lock
receivedata_end:
pop r10
pop r9