soconnor/eceg431
1
0
Fork 0
mirror of https://github.com/soconnor0919/eceg431.git synced 2025-12-11 22:54:43 -05:00
Code Issues Packages Projects Releases Wiki Activity

project04: complete

Browse Source
This commit is contained in:
Sean O'Connor
2025-09-10 15:48:45 -04:00
parent 2231d4c97c
commit 4025e16dd8
2 changed files with 7 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
04/fill/Fill.asm
View File

@@ -15,7 +15,7 @@
(LOOP) // main loop (LOOP) // main loop
// check kb input // check kb input
@KBD // sel kb reg @KBD // sel kb
D=M // load kb value to data D=M // load kb value to data
@FILL_BLACK // sel fill black @FILL_BLACK // sel fill black
D;JNE // jump if key pressed (jump not equal? non-zero) D;JNE // jump if key pressed (jump not equal? non-zero)

9
04/mult/Mult.asm
View File

@@ -7,7 +7,10 @@
// (R0, R1, R2 refer to RAM[0], RAM[1], and RAM[2], respectively.) // (R0, R1, R2 refer to RAM[0], RAM[1], and RAM[2], respectively.)
// The algorithm is based on repetitive addition. // The algorithm is based on repetitive addition.
// excuse excessive comments here.. // excuse excessive comments here.. this is how I did asm in 306.
// to multiply, we add r0 to r2, r1 times.
// after each cycle (addition), we decrement r1.
// when r1 is zero, then we're done.
// init r2 to 0 // init r2 to 0
@2 // sel r2 @2 // sel r2
@@ -25,8 +28,8 @@
@2 // sel r2 @2 // sel r2
D=M // load r2 to data D=M // load r2 to data
@0 // sel r0 @0 // sel r0
D=D+M // add r0 to r2 (r2 in mem, r0 in data) D=D+M // add r0 to r2 (r2 in data, r0 in mem)
@2 // sel r2 @2 // sel r2 again
M=D // store result in r2 M=D // store result in r2
// r1 -= 1 (decrement) // r1 -= 1 (decrement)