Add uart2 test program

Reads input from uart and then writes it back out again immediately.
2023-01-12 14:05:13 -06:00
parent d5bccd46e3
commit 519cd19739
7 changed files with 53 additions and 23 deletions
--- a/hw/efinix_fpga/test_programs/uart.s
+++ b/hw/efinix_fpga/test_programs/uart.s
@@ -9,7 +9,14 @@ main:
    ldx #$00
 loop:
    lda string,x
+    beq end
    sta UART_TX
+    inx
+wait:
+    lda UART_STATUS
+    bit #$02
+    beq loop
+    bra wait

 end:
    wai