From a9fa3d355ed5936f6262ce884bfd79a4501b16cf Mon Sep 17 00:00:00 2001
From: Nero <41307858+nero@users.noreply.github.com>
Date: Sat, 4 Apr 2020 09:27:33 +0000
Subject: [PATCH] Remove unused stuff

---
 .gitmodules      |   0
 lib/dump.asm     |  53 ------------------
 lib/earlymcb.asm |  65 ----------------------
 lib/fcbparse.asm |  46 ---------------
 lib/fdc.asm      |  14 -----
 lib/log2.asm     |  15 -----
 lib/nasmcomp.asm | 124 -----------------------------------------
 lib/opcode80.asm | 142 -----------------------------------------------
 lib/popcnt.asm   |  30 ----------
 lib/print.asm    |  32 -----------
 lib/printf.asm   | 105 -----------------------------------
 11 files changed, 626 deletions(-)
 delete mode 100644 .gitmodules
 delete mode 100644 lib/dump.asm
 delete mode 100644 lib/earlymcb.asm
 delete mode 100644 lib/fcbparse.asm
 delete mode 100644 lib/fdc.asm
 delete mode 100644 lib/log2.asm
 delete mode 100644 lib/nasmcomp.asm
 delete mode 100644 lib/opcode80.asm
 delete mode 100644 lib/popcnt.asm
 delete mode 100644 lib/print.asm
 delete mode 100644 lib/printf.asm

diff --git a/.gitmodules b/.gitmodules
deleted file mode 100644
index e69de29..0000000
diff --git a/lib/dump.asm b/lib/dump.asm
deleted file mode 100644
index 5ad8cec..0000000
--- a/lib/dump.asm
+++ /dev/null
@@ -1,53 +0,0 @@
-dump:
-  push ax
-  push cx
-  push dx
-  push bx
-  mov al, 0x0A
-  call putc
-  mov al, 0x0D
-  call putc
-  mov cx, 4
-.loop_line:
-  push cx
-  push bx
-  mov ax, bx
-  call print16
-  mov al, ':'
-  call putc
-  mov al, ' '
-  call putc
-  mov cx, 0x8
-.loop_bin:
-  mov ax, [bx]
-  xchg al, ah
-  inc bx
-  inc bx
-  call print16
-  mov dl, ' '
-  call CONOUT
-  loop .loop_bin
-  pop bx
-  mov cx, 0x10
-.loop_ascii:
-  mov dl, '.'
-  cmp byte [bx], 0x20
-  jc .print
-  cmp byte [bx], 0x80
-  jnc .print
-  mov dl, [bx]
-.print:
-  inc bx
-  call CONOUT
-  loop .loop_ascii
-  pop cx
-  mov dl, 0x0A
-  call CONOUT
-  mov dl, 0x0D
-  call CONOUT
-  loop .loop_line
-  pop bx
-  pop dx
-  pop cx
-  pop ax
-  ret
diff --git a/lib/earlymcb.asm b/lib/earlymcb.asm
deleted file mode 100644
index 6a12438..0000000
--- a/lib/earlymcb.asm
+++ /dev/null
@@ -1,65 +0,0 @@
-%define mcb_first 0x5F
-
-; This alloc uses an MCB-like list always starting at a fixed offset.
-; Boot components may use it to allocate space during early boot.
-; The list ends with the most recently allocated arena at its end,
-; contrary to how the MCBs work on DOS.
-
-; Memory Layout:
-;   0000                 Interrupt table
-;   0400                 BIOS data area
-;   05F0  16 bytes       Arena header 1
-;   0600  BX paragraphs  Arena 1
-;   ....  16 bytes       Arena header 2
-;   ....  BX paragraphs  Arena 2
-;                        ...
-;   ....  16 bytes       Arena header n
-;   ....  BX paragraphs  Arena n
-;                        Unmanaged memory
-
-; Take note that this mechanism works differently than under DOS -
-; but this one is optimized for fast and small alloc.
-
-; Typical usecases:
-; - Diskette Parameter Table (See interrupt 1Eh)
-; - Partition table
-; - Boot sector relocations
-; - Boot sector data (FAT table, rootdir)
-
-; Allocate paragraphs in unmanaged memory
-; IN	BX	requested memory in paragraphs
-; OUT	AX	output segment
-early_alloc:
-  push ds
-  push bx
-  push si
-  ; si is used as zero register
-  ; this allows the opcodes to use a byte as disp instead of word
-  xor si, si
-  mov ax, mcb_first
-.next:
-  mov ds, ax
-  inc ax
-  ; DS is seg of arena header
-  ; AX is seg of arena
-  cmp BYTE [si], 0x4D
-  jne .here
-  add ax, WORD [si+3]
-  jmp .next
-.here:
-  ; mark as item
-  mov BYTE [si], 0x4D
-  ; write segment length in paragraphs
-  mov WORD [si+3], bx
-  ; if allocation is higher than CS, then we are in managed memory
-  ; set ourself as owner then, otherwise use dummy value 8
-  mov bx, cs
-  cmp ax, bx ; CF = CS in unmanaged memory
-  jnc .setup_owner
-  mov bx, 8
-.setup_owner:
-  mov WORD [si+1], bx
-  pop si
-  pop bx
-  pop ds
-  ret
diff --git a/lib/fcbparse.asm b/lib/fcbparse.asm
deleted file mode 100644
index eee48d7..0000000
--- a/lib/fcbparse.asm
+++ /dev/null
@@ -1,46 +0,0 @@
-; Parse ASCIIZ string into FCB
-; IN	SI	ptr to filename
-;       BX	ptr to FCB
-fcb_parse:
-  push di
-  push ax
-  mov di, bx
-  xor ax, ax
-  stosb
-.cleanout:
-  push di
-  mov cx, 0x0A
-  mov al, 0x20
-  rep stosb
-  pop di
-.base_loop:
-  call .read
-  cmp al, 0x2E
-  je .ext_start
-  cmp al, 0x20
-  je .ret
-  stosb
-  jmp .base_loop
-.ext_start:
-  mov di, bx
-  add di, 9
-.ext_loop:
-  call .read
-  cmp al, 0x20
-  je .ret
-  stosb
-  jmp .ext_loop
-.read:
-  lodsb
-  test al, al
-  jz .eret
-  cmp al, 0x0D
-  je .eret
-  ret
-.eret:
-  dec si
-  pop ax
-.ret:
-  pop ax
-  pop di
-  ret
diff --git a/lib/fdc.asm b/lib/fdc.asm
deleted file mode 100644
index dbb21e6..0000000
--- a/lib/fdc.asm
+++ /dev/null
@@ -1,14 +0,0 @@
-; FDC Descriptor / BIOS parameter block
-fdc_ss:    equ 0x0B ; WORD sector size
-fdc_sc:    equ 0x0D ; BYTE sectors per cluster
-fdc_rsc:   equ 0x0E ; WORD reserved sectors
-fdc_fn:    equ 0x10 ; BYTE FAT tables
-fdc_rde:   equ 0x11 ; WORD root directory entries
-fdc_ts:    equ 0x13 ; WORD total sector count
-                    ;      0 if >65535, use lrgts then
-fdc_mi:    equ 0x15 ; BYTE media descriptor byte
-fdc_sf:    equ 0x16 ; WORD sectors per FAT
-fdc_spt:   equ 0x18 ; WORD sectors per track
-fdc_nos:   equ 0x1A ; WORD sides/heads
-fdc_po:    equ 0x1C ; DWORD partition offset
-fdc_lrgts: equ 0x20 ; DWORD large sector count
diff --git a/lib/log2.asm b/lib/log2.asm
deleted file mode 100644
index b61dbd9..0000000
--- a/lib/log2.asm
+++ /dev/null
@@ -1,15 +0,0 @@
-; Calculate dual logarithm (int)
-; IN	AX	number
-; OUT	AX	dual logarithm
-log2:
-  push cx
-  mov cx, 15
-.loop:
-  rcl ax, 1
-  jc .ret
-  loop .loop
-.ret:
-  cmc
-  mov ax, cx
-  pop cx
-  ret
diff --git a/lib/nasmcomp.asm b/lib/nasmcomp.asm
deleted file mode 100644
index 4fbebf8..0000000
--- a/lib/nasmcomp.asm
+++ /dev/null
@@ -1,124 +0,0 @@
-; Pseudo-Instruction: fill bytes until offset
-%macro pad 1.nolist
-times (%1 - ($-$$)) nop
-%endmacro
-
-; REGISTERS
-%define a al
-%define b ch
-%define c cl
-%define d dh
-%define e dl
-%define h bh
-%define l bl
-%define m byte [bx]
-
-; REGISTER PAIRS
-%define bc cx
-%define de dx
-%define hl bx
-
-; INSTRUCTIONS
-; data movement
-; 'mov' can stay literal
-%define mvi mov
-%define lxi mov
-%macro lda 1
-  mov al, byte [%1]
-%endmacro
-%macro sta 1
-  mov byte [%1], al
-%endmacro
-%macro lhld 1
-  mov bx, word [%1]
-%endmacro
-%macro shld 1
-  mov word [%1], bx
-%endmacro
-%macro ldax 1
-  mov al, byte [%1]
-%endmacro
-%macro stax 1
-  mov byte [%1], al
-%endmacro
-%macro xchg 1
-  xchg dx, bx
-%endmacro
-; addition
-%macro add 1
-  add al, %1
-%endmacro
-%macro adi 1
-  add al, %1
-%endmacro
-%macro adc 1
-  adc al, %1
-%endmacro
-%macro aci 1
-  adc al, %1
-%endmacro
-; subtraction
-%macro sub 1
-  sub al, %1
-%endmacro
-%macro sui 1
-  sub al, %1
-%endmacro
-%macro sbb 1
-  sub al, %1
-%endmacro
-%macro sbi 1
-  sub al, %1
-%endmacro
-; increment / decrement
-%define inr inc
-%define dcr dec
-%define inx inc
-%define dcx dec
-; pointer arithmetic
-%macro dad 1
-  add bx, %1
-%endmacro
-; 'daa' stays literal
-
-;ANA S     10100SSS          ZSCPA   AND register with A
-;ANI #     11100110 db       ZSPCA   AND immediate with A
-;ORA S     10110SSS          ZSPCA   OR  register with A
-;ORI #     11110110          ZSPCA   OR  immediate with A
-;XRA S     10101SSS          ZSPCA   ExclusiveOR register with A
-;XRI #     11101110 db       ZSPCA   ExclusiveOR immediate with A
-
-;CMP S     10111SSS          ZSPCA   Compare register with A
-;CPI #     11111110          ZSPCA   Compare immediate with A
-
-;RLC       00000111          C       Rotate A left
-;RRC       00001111          C       Rotate A right
-;RAL       00010111          C       Rotate A left through carry
-;RAR       00011111          C       Rotate A right through carry
-;CMA       00101111          -       Compliment A
-;CMC       00111111          C       Compliment Carry flag
-;STC       00110111          C       Set Carry flag
-;JMP a     11000011 lb hb    -       Unconditional jump
-;Jccc a    11CCC010 lb hb    -       Conditional jump
-;CALL a    11001101 lb hb    -       Unconditional subroutine call
-;Cccc a    11CCC100 lb hb    -       Conditional subroutine call
-;RET       11001001          -       Unconditional return from subroutine
-;Rccc      11CCC000          -       Conditional return from subroutine
-;RST n     11NNN111          -       Restart (Call n*8)
-;PCHL      11101001          -       Jump to address in H:L
-;PUSH RP   11RP0101 *2       -       Push register pair on the stack
-;POP RP    11RP0001 *2       *2      Pop  register pair from the stack
-;XTHL      11100011          -       Swap H:L with top word on stack
-;SPHL      11111001          -       Set SP to content of H:L
-;IN p      11011011 pa       -       Read input port into A
-;OUT p     11010011 pa       -       Write A to output port
-;EI        11111011          -       Enable interrupts
-;DI        11110011          -       Disable interrupts
-;HLT       01110110          -       Halt processor
-;NOP       00000000          -       No operation
-
-%macro cnz 1
-  jz %%skip
-  call near %1
-%%skip:
-%endmacro
diff --git a/lib/opcode80.asm b/lib/opcode80.asm
deleted file mode 100644
index 1334f61..0000000
--- a/lib/opcode80.asm
+++ /dev/null
@@ -1,142 +0,0 @@
-; BYTE      name length
-; n BYTES   name
-; BYTE      opcode template (variable parts zero)
-;
-; BYTE      operand 1
-; BYTE      operand 2
-
-; operand types:
-; 0x00      none
-; 0x1n      reg8, opcode |= (reg8 << n)
-; 0x2n      reg16, opcode |= (reg8 << n)
-; 0x3n      reg16b, opcode |= (reg8 << n)
-; 0x7n      3-bit number, opcode |= (num << n)
-; 0x80      imm8, encoded as extra byte
-; 0x81      imm16, encoded as extra word
-
-registers:
-.reg8:
-  db "B", 0
-  db "C", 0
-  db "D", 0
-  db "E", 0
-  db "H", 0
-  db "L", 0
-  db "M", 0
-  db 0
-.reg16:
-  db "BC", 0
-  db "DE", 0
-  db "HL", 0
-  db "SP", 0
-  db 0
-.reg16b:
-  db "BC", 0
-  db "DE", 0
-  db "HL", 0
-  db "AF", 0
-  db 0
-.end:
-  db 0
-
-opcodes:
-  ; Data movement
-  db 3, "MOV",  0b01000000, 0x13, 0x10
-  db 3, "MVI",  0b00000110, 0x13, 0x80
-  db 3, "LXI",  0b00000001, 0x24, 0x81
-  db 3, "LDA",  0b00111010, 0x81, 0x00
-  db 3, "STA",  0b00110010, 0x81, 0x00
-  db 4, "LHLD", 0b00101010, 0x81, 0x00
-  db 4, "SHLD", 0b00100010, 0x81, 0x00
-  db 4, "LDAX", 0b00001010, 0x24, 0x00
-  db 4, "STAX", 0b00000010, 0x24, 0x00
-  db 4, "XCHG", 0b11101011, 0x00, 0x00
-
-  ; Addition / Subtraction
-  db 3, "ADD",  0b10000000, 0x10, 0x00
-  db 3, "ADI",  0b11000110, 0x80, 0x00
-  db 3, "ADC",  0b10001000, 0x10, 0x00
-  db 3, "ACI",  0b11001110, 0x80, 0x00
-  db 3, "SUB",  0b10010000, 0x10, 0x00
-  db 3, "SUI",  0b11010110, 0x80, 0x00
-  db 3, "SBB",  0b10011000, 0x10, 0x00
-  db 3, "SBI",  0b11011110, 0x80, 0x00
-  db 3, "INR",  0b00000100, 0x13, 0x00
-  db 3, "DCR",  0b00000101, 0x13, 0x00
-  db 3, "INX",  0b00000011, 0x24, 0x00
-  db 3, "DCX",  0b00001011, 0x24, 0x00
-  db 3, "DAD",  0b00001001, 0x24, 0x00
-
-  ; BCD
-  db 3, "DAA",  0b00100111, 0x00, 0x00
-
-  ; Bitwise operations
-  db 3, "ANA",  0b10100000, 0x10, 0x00
-  db 3, "ANI",  0b11100110, 0x80, 0x00
-  db 3, "ORA",  0b10110000, 0x10, 0x00
-  db 3, "ORI",  0b11110110, 0x80, 0x00
-  db 3, "XRA",  0b10101000, 0x10, 0x00
-  db 3, "XRI",  0b11101110, 0x80, 0x00
-  db 3, "CMP",  0b10111000, 0x10, 0x00
-  db 3, "CPI",  0b11111110, 0x80, 0x00
-
-  ; Rotate
-  db 3, "RLC",  0b00000111, 0x00, 0x00
-  db 3, "RRC",  0b00001111, 0x00, 0x00
-  db 3, "RAL",  0b00010111, 0x00, 0x00
-  db 3, "RAR",  0b00011111, 0x00, 0x00
-
-  ; Complement
-  db 3, "CMA",  0b00101111, 0x00, 0x00
-  db 3, "CMC",  0b00111111, 0x00, 0x00
-  db 3, "STC",  0b00110111, 0x00, 0x00
-
-  ; Jump
-  db 3, "JMP",  0b11000011, 0x81, 0x00
-  db 3, "JNZ",  0b11000010, 0x81, 0x00
-  db 2, "JZ",   0b11001010, 0x81, 0x00
-  db 3, "JNC",  0b11010010, 0x81, 0x00
-  db 2, "JC",   0b11011010, 0x81, 0x00
-  db 3, "JPO",  0b11100010, 0x81, 0x00
-  db 3, "JPE",  0b11101010, 0x81, 0x00
-  db 2, "JP",   0b11110010, 0x81, 0x00
-  db 2, "JM",   0b11111010, 0x81, 0x00
-
-  ; Call
-  db 4, "CALL", 0b11001101, 0x81, 0x00
-  db 3, "CNZ",  0b11000100, 0x81, 0x00
-  db 2, "CZ",   0b11001100, 0x81, 0x00
-  db 3, "CNC",  0b11010100, 0x81, 0x00
-  db 2, "CC",   0b11011100, 0x81, 0x00
-  db 3, "CPO",  0b11100100, 0x81, 0x00
-  db 3, "CPE",  0b11101100, 0x81, 0x00
-  db 2, "CP",   0b11110100, 0x81, 0x00
-  db 2, "CM",   0b11111100, 0x81, 0x00
-
-  ; Return
-  db 3, "RET",  0b11001001, 0x00, 0x00
-  db 3, "RNZ",  0b11000000, 0x00, 0x00
-  db 2, "RZ",   0b11001000, 0x00, 0x00
-  db 3, "RNC",  0b11010000, 0x00, 0x00
-  db 2, "RC",   0b11011000, 0x00, 0x00
-  db 3, "RPO",  0b11100000, 0x00, 0x00
-  db 3, "RPE",  0b11101000, 0x00, 0x00
-  db 2, "RP",   0b11110000, 0x00, 0x00
-  db 2, "RM",   0b11111000, 0x00, 0x00
-
-  db 3, "RST",  0b11000111, 0x73, 0x00
-  db 4, "PCHL", 0b11101001, 0x00, 0x00
-  db 4, "PUSH", 0b11000101, 0x34, 0x00
-  db 3, "POP",  0b11000001, 0x34, 0x00
-  db 4, "XTHL", 0b11100011, 0x00, 0x00
-  db 4, "SPHL", 0b11111001, 0x00, 0x00
-
-  db 2, "IN",   0b11011011, 0x80, 0x00
-  db 3, "OUT",  0b11010011, 0x80, 0x00
-
-  db 2, "EI",   0b11111011, 0x00, 0x00
-  db 2, "DI",   0b11110011, 0x00, 0x00
-  db 3, "HLT",  0b01110110, 0x00, 0x00
-  db 3, "NOP",  0b00000000, 0x00, 0x00
-
-  db 0
diff --git a/lib/popcnt.asm b/lib/popcnt.asm
deleted file mode 100644
index d03694a..0000000
--- a/lib/popcnt.asm
+++ /dev/null
@@ -1,30 +0,0 @@
-popcnt:
-  push bx
-  push cx
-
-  mov bx, ax
-  and ax, 0x5555 ; 8x 01
-  and bx, 0xaaaa ; 8x 10
-  shr bx, 1
-  add ax, bx
-
-  mov bx, ax
-  and ax, 0x3333 ; 4x 0011
-  and bx, 0xcccc ; 4x 1100
-  mov cl, 2
-  shr bx, cl
-  add ax, bx
-
-  mov bx, ax
-  and ax, 0x0f0f ; 2x 00001111
-  and bx, 0xf0f0 ; 2x 11110000
-  mov cl, 4
-  shr bx, cl
-  add ax, bx
-
-  add al, ah
-  xor ah, ah
-
-  pop cx
-  pop bx
-  ret
diff --git a/lib/print.asm b/lib/print.asm
deleted file mode 100644
index 582e48d..0000000
--- a/lib/print.asm
+++ /dev/null
@@ -1,32 +0,0 @@
-; important functions in this file: kprintf
-
-; print a word
-; in: ax
-print16:
-  xchg ah,al
-  call print8
-  xchg ah,al
-
-; print a byte
-; in: al
-print8:
-  push ax ; avoid destroying ah
-  push bx
-  xor bx, bx
-  aam 16 ; high nibble moved into ah, low nibble into al
-  add ax, 0x3030
-  push ax
-  xchg al, ah
-  call .nib
-  pop ax
-  call .nib
-  pop bx
-  pop ax
-  ret
-.nib:
-  cmp al, 0x3a
-  jl .out
-  add al, 0x07
-.out:
-  call putc
-  ret
diff --git a/lib/printf.asm b/lib/printf.asm
deleted file mode 100644
index 9584c70..0000000
--- a/lib/printf.asm
+++ /dev/null
@@ -1,105 +0,0 @@
-printf:
-  cld
-  pop si
-  push bp
-  mov bp, sp
-.loop:
-  mov al, [cs:si]
-  inc si
-  cmp al, 0x00
-  je .end
-  cmp al, 0x25
-  je .handle_25h
-.literal:
-  call putc
-  jmp .loop
-.end:
-  pop bp
-  push si
-  ret
-.handle_25h:
-  mov al, [cs:si]
-  inc si
-  cmp al, 0x25
-  je .literal
-  cmp al, 0x58 ; 'X'
-  je .printhex
-  cmp al, 0x55 ; 'U'
-  je .printdec
-  cmp al, 0x53 ; 'S'
-  je .printstr
-  mov al, 0x3F
-  jmp .literal
-.printhex:
-  add bp, 2
-  mov ax, [bp]
-  mov bx, 0x0010
-  call print_number
-  jmp .loop
-.printdec:
-  add bp, 2
-  mov ax, [bp]
-  mov bx, 0x000A
-  call print_number
-  jmp .loop
-.printstr:
-  add bp, 2
-  mov ax, [bp]
-  call print_string
-  jmp .loop
-
-; converts a integer to ascii
-; in    ax      input integer
-;       bx      base
-;	cx	minimum number of digits
-; out   bx      garbled
-;       dx      garbled
-print_number_padded:
-  xor dx, dx
-  div bx
-  push dx
-  dec cx
-  jz .nopad
-  call print_number_padded
-  jmp print_number.end
-.nopad:
-  call print_number
-  jmp print_number.end
-
-; converts a integer to ascii
-; in	ax	input integer
-;	bx	base
-; out	bx	garbled
-;	dx	garbled
-print_number:
-  xor dx, dx
-  div bx ; ax = dx:ax / 10, dx = dx:ax % 10
-  push dx
-  and ax, ax
-  jz .end
-  call print_number
-.end:
-  pop bx
-  xor bh, bh
-  add bx, print_chars
-  mov al, [cs:bx]
-  call putc
-  ret
-
-; putc's a string
-; in	DS:AX	null-terminated string
-print_string:
-  push si
-  mov si, ax
-.loop:
-  lodsb
-  cmp al, 0x00
-  je .end
-  call putc
-  jmp .loop
-.end:
-  pop si
-  ret
-
-print_chars:
-  db "0123456789ABCDEF"
\ No newline at end of file