notes:comporg:spring2025:projects:dapx
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| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| notes:comporg:spring2025:projects:dapx [2025/03/05 20:11] – [SHIFT] bdildine | notes:comporg:spring2025:projects:dapx [2025/03/20 03:15] (current) – [Debug Registers] tkastne1 | ||
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| Line 46: | Line 46: | ||
| ====OR==== | ====OR==== | ||
| ====AND==== | ====AND==== | ||
| + | The AND op code will do an and comparison of two values | ||
| + | < | ||
| + | mov R0, 0x00F00000 | ||
| + | mov R1, 0x12689649 | ||
| + | and R0, R1 | ||
| + | </ | ||
| + | This code will leave us with 0x00600000 because every other value was put into and with a zero. | ||
| ====NOT==== | ====NOT==== | ||
| ====NAND==== | ====NAND==== | ||
| Line 101: | Line 108: | ||
| ASCII code for 0 --> decimal 48, hexadecimal 0x30 | ASCII code for 0 --> decimal 48, hexadecimal 0x30 | ||
| ASCII code for x --> 120 | ASCII code for x --> 120 | ||
| - | ASCII code for [ --> | + | ASCII code for [ --> |
| ASCII code for ] --> 93 | ASCII code for ] --> 93 | ||
| ASCII code for : --> 58 | ASCII code for : --> 58 | ||
| Line 128: | Line 135: | ||
| < | < | ||
| - | mov | + | mov |
| - | | + | and |
| </ | </ | ||
| Line 137: | Line 144: | ||
| < | < | ||
| - | mov | + | mov |
| - | | + | imul R2, |
| - | mov | + | mov |
| - | | + | shl |
| - | and | + | and |
| </ | </ | ||
| ====Shifting==== | ====Shifting==== | ||
| Line 152: | Line 159: | ||
| ===Displaying=== | ===Displaying=== | ||
| + | Because we already have the debug function, we can use that to display all of the hex values needed | ||
| + | |||
| + | The format is identical for every address, and goes as the following: [address]: | ||
| + | |||
| + | We can print the brackets and colon manually and leave the address and values to the debug function | ||
| + | |||
| + | < | ||
| + | mov | ||
| + | out | ||
| + | mov | ||
| + | out | ||
| + | out | ||
| + | </ | ||
| + | |||
| + | Repeat this for ' | ||
| + | |||
| + | Utilize the debug function to print the address and value as shown in the following | ||
| + | |||
| + | < | ||
| + | push R2 ;R2 is the current address | ||
| + | mov | ||
| + | push R3 | ||
| + | push R4 ;Ypos | ||
| + | call _debug | ||
| + | |||
| + | mov | ||
| + | push R3 | ||
| + | mov | ||
| + | push R3 | ||
| + | push R4 ;Ypos | ||
| + | call _debug | ||
| + | </ | ||
| + | |||
| + | All of this code should be run for every address, stepping from the start value to the end value | ||
| + | |||
| + | We will need to setup a loop with an exit condition | ||
| + | |||
| + | ===pseudocode=== | ||
| + | < | ||
| + | MOVE THE STARTING ADDRESS INTO A DEDICATED REGISTER (current address) | ||
| + | UNTIL WE HAVE PASSED THE FINAL ADDRESS: | ||
| + | TEST IF THE CURRENT ADDRESS IS GREATER THAN THE FINAL ADDRESS | ||
| + | SHOULD IT BE GREATER SKIP TO AFTER THIS LOOP | ||
| + | | ||
| + | | ||
| + | | ||
| + | REPEAT | ||
| + | </ | ||
| ======debugregister function====== | ======debugregister function====== | ||
| =====dapX imagery===== | =====dapX imagery===== | ||
| Line 173: | Line 228: | ||
| ======Debug Registers====== | ======Debug Registers====== | ||
| - | ===Printing out R:=== | + | ===Printing out R#:=== |
| + | The simplest way to print out the register label would be to separate the singe and double digit registers into to groups | ||
| + | |||
| + | For registers 0-9 we print ' | ||
| + | |||
| + | For registers 10-13 we print ' | ||
| ===Printing registers=== | ===Printing registers=== | ||
| + | |||
| + | Since we want to preserve all of the register values, we push them onto the stack at the start | ||
| + | |||
| + | Using this we can get the value for each register to print out | ||
| + | |||
| + | Assuming we push the register 0-13 directly after saving the base pointer we can do the following to get R0: | ||
| + | |||
| + | < | ||
| + | mov | ||
| + | push R0 | ||
| + | mov | ||
| + | push R0 | ||
| + | mov | ||
| + | push R0 | ||
| + | call _debug | ||
| + | </ | ||
| + | |||
| + | This process can be repeated for all registers | ||
| ===Debugging our debugregs Subroutine=== | ===Debugging our debugregs Subroutine=== | ||
notes/comporg/spring2025/projects/dapx.1741205488.txt.gz · Last modified: 2025/03/05 20:11 by bdildine
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