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fix bootloader and add docs, minor fix to hello

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Konarak
2025-04-21 23:19:04 +05:30
parent de1ce5cdac
commit 48fbd4abed
2 changed files with 51 additions and 15 deletions
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47
06_IO_Devices/05_GO/boot.asm
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@@ -4,6 +4,41 @@
//
// Put your code here:
// @R0
// D=M
//
// // Shift left by 8 bits by doubling 8 times
// D=D+D // Shift left by 1 bit
// D=D+D // Shift left by another bit
// D=D+D // Shift left by another bit
// D=D+D // Shift left by another bit (4-bit shift so far)
// D=D+D // Shift left by another bit
// D=D+D // Shift left by another bit
// D=D+D // Shift left by another bit
// D=D+D // Shift left by another bit (now D contains 0xEA00)
//
// D=M -> 1111110000010000
// M=D -> 1110001100001000
// M=0 -> 1110101010001000
//
// // Store the result in R1
// @R1
// M=D
//
//
// 00010000 0 -> add 8 times and store to lhs
// 00000001 1 -> add to lhs and store to word
// 0001000000000001 write all the words to sram
//
// 0001000000000001
// 1111110001010000
// 0001000000000000
// 1110001100001000
// 0000000000000000
// 1110101010000111
// read data starting at address
// 0x03 0x01 0x00 0x00
@3
@@ -48,7 +83,7 @@
@DECR2
D;JGT
//command stack base address
//command stack base address
@100
D=A
@READCOMMAND
@@ -120,7 +155,7 @@
(WESTWORD)
@SPI
D=M
@R13
@DEBUG0
M=D
DM=D+M
DM=D+M
@@ -142,11 +177,11 @@
M=D
@SPI
D=M
@R14
@DEBUG1
M=D
@R13
@DEBUG0
D=M
@R14
@DEBUG1
D=D+M
@SRAM_D
M=D
@@ -154,7 +189,7 @@
M=0
@WORDCOUNT
M=M+1
@6
@57343
D=A
@WORDCOUNT
D=D-M