.ifill push r6
prog_pop:
-.ifill disc r6
+.ifill disc
prog_xch:
.ifill pop r6
.define PBASE, 0x2030
.define PADDR, 0x4
.define PDATA, 0x8
+.org 0
+start:
+ call main
+ call main
+ ret
main:
brnz+ u_test ; branch if not zero
stb r0, UART_TRANS(r10)
+
;set address of input
ldis r1, inputdata@lo
ldih r1, inputdata@hi
+
;set address of program start
- ldis r2, prog_start@lo
- ldih r2, prog_start@hi
+ ldis r2, (prog_start/4)@lo
+ ldih r2, (prog_start/4)@hi
;set address to instruction table
ldis r3, instrtable@lo
ldis r13, PBASE@lo
ldih r13, PBASE@hi
+
;set programmer address
stw r2, PADDR(r13)
ldi r10, UART_BASE@lo
ldih r10, UART_BASE@hi
-u_send_by1:
+u_send_byte1:
ldw r9, UART_STATUS(r10)
andx r9, UART_TRANS_EMPTY
- brnz+ u_send_by1 ; branch if not zero
+ brnz+ u_send_byte1 ; branch if not zero
ldis r0, 0x50
stb r0, UART_TRANS(r10)
;generate branch
sub r11, r6, r8
- lrs r11, r11, 2
+ ;lrs r11, r11, 2
;set the upper 16 bit 0
andx r11, 0xFFFF
;shift to the position of imm in br
PROGINSTR
;increment address
- addi r2, r2, 52
+ addi r2, r2, 13
br+ vm_loop
PROGINSTR
;increment address
- addi r2, r2, 16
+ addi r2, r2, 4
br+ vm_loop
PROGINSTR
;increment address
- addi r2, r2, 16
+ addi r2, r2, 4
br+ vm_loop
PROGINSTR
;increment address
- addi r2, r2, 8
+ addi r2, r2, 2
br+ vm_loop
PROGINSTR
;increment address
- addi r2, r2, 20
+ addi r2, r2, 5
br+ vm_loop
PROGINSTR
;increment address
- addi r2, r2, 8
+ addi r2, r2, 2
br+ vm_loop
PROGINSTR
;increment address
- addi r2, r2, 12
+ addi r2, r2, 3
;pc+4
addi r1, r1, 4
PROGINSTR
;we add the offset to this instruction
- addi r8, r2, 12
+ addi r8, r2, 3
;we know calculate the jump destination
sub r8, r0, r8
;we shift 2 bits out, because rel. br takes instr.
;count and not address amount ...
- lrs r8, r8, 2
+ ;lrs r8, r8, 2
;set the upper 16 bit 0
andx r8, 0xFFFF
;shift to the position of imm in br
PROGINSTR
;increment address
- addi r2, r2, 16
+ addi r2, r2, 4
br+ vm_loop
;increment defer table address
addi r9, r9, 8
;increment address
- addi r2, r2, 16
+ addi r2, r2, 4
br+ vm_loop
;case P
PROGINSTR
;increment address
- addi r2, r2, 4
+ addi r2, r2, 1
br+ vm_loop
PROGINSTR
;increment address
- addi r2, r2, 16
+ addi r2, r2, 4
br+ vm_loop
PROGINSTR
;increment address
- addi r2, r2, 12
+ addi r2, r2, 3
br+ vm_loop