URL https://opencores.org/ocsvn/leros/leros/trunk

Subversion Repositories leros

[/] [leros/] [trunk/] [asm/] [echo.asm] - Blame information for rev 4

Go to most recent revision | Details | Compare with Previous | View Log


//
// Just echo characters received from the UART
//
 
        nop     // first instruction is not executed
 
 
start:
        in 0    // check rdrf
        and 2
        nop     // one delay slot
        brz start
        in 1    // read received character
        store r0
loop:
        in 0    // check tdre
        and 1
        nop     // one delay slot
        brz loop
        load r0
        out 1
        branch start

Line No.	Rev	Author	Line
1	3	martin	`//`
2			`// Just echo characters received from the UART`
3			`//`
4
5			`nop // first instruction is not executed`
6
7
8			`start:`
9			`in 0 // check rdrf`
10			`and 2`
11			`nop // one delay slot`
12			`brz start`
13			`in 1 // read received character`
14			`store r0`
15			`loop:`
16			`in 0 // check tdre`
17			`and 1`
18			`nop // one delay slot`
19			`brz loop`
20			`load r0`
21			`out 1`
22			`branch start`

Browse

Tools

Subversion Repositories leros

[/] [leros/] [trunk/] [asm/] [echo.asm] - Blame information for rev 4