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Dominic Grimm 2022-08-26 15:33:16 +02:00
parent 8b45ae7a03
commit e82c5bdb90
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1 changed files with 0 additions and 147 deletions
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examples/forth_old.asm
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@ -1,147 +0,0 @@
@ hence core lib
core:
core_mem:
.define CORE_MEM_PRG, (0 * 1024)
.define CORE_MEM_ST, (32 * 1024)
.define CORE_MEM_MEM, (40 * 1024)
.define CORE_MEM_OUT, (56 * 1024)
.define CORE_MEM_CHR, (56 * 1024 + 1)
.define CORE_MEM_KEY, (56 * 1024 + 2)
core_reg:
.define CORE_REG_PC, 0x0
.define CORE_REG_OPC, 0x1
.define CORE_REG_ARG, 0x2
.define CORE_REG_S, 0x3
.define CORE_REG_SP, 0x4
.define CORE_REG_A, 0x5
.define CORE_REG_B, 0x6
.define CORE_REG_C, 0x7
.define CORE_REG_D, 0x8
core_alu:
.define CORE_ALU_NOT, 0x00
.define CORE_ALU_AND, 0x01
.define CORE_ALU_OR, 0x02
.define CORE_ALU_XOR, 0x03
.define CORE_ALU_LSH, 0x04
.define CORE_ALU_RSH, 0x05
.define CORE_ALU_ADD, 0x06
.define CORE_ALU_SUB, 0x07
.define CORE_ALU_MUL, 0x08
.define CORE_ALU_DIV, 0x09
.define CORE_ALU_CMP, 0x0a
.define CORE_ALU_EQ, 0x0b
.define CORE_ALU_LT, 0x0c
.define CORE_ALU_GT, 0x0d
.define CORE_ALU_LEQ, 0x0e
.define CORE_ALU_GEQ, 0x0f
.define CORE_ALU_BOL, 0x10
.define CORE_ALU_INV, 0x11
.define CORE_ALU_RND, 0x12
@ hence standard lib
STD:
.define STD_U8_MAX, 0xff
.define STD_U16_MAX, 0xffff
.macro std_stop
ts 0xffff
tlr CORE_REG_PC
.macroend
forth:
.define FORTH_MEM_INPUT_SIZE, 16
.define FORTH_MEM_INPUT_DYN_SIZE, CORE_MEM_MEM
.define FORTH_MEM_INPUT_START, (FORTH_MEM_INPUT_DYN_SIZE + 1)
.define FORTH_MEM_INPUT_END, (FORTH_MEM_INPUT_START + FORTH_MEM_INPUT_SIZE)
.define jump_main, (CORE_MEM_ST - 3 - 1)
ts jump_main
tlr CORE_REG_PC
end_input:
dbg
main:
@ loop body
loop:
@ read key from stdin
ts CORE_MEM_KEY
get
@ check if key is newline (0x0a)
tlr CORE_REG_D @ store in register D because register A is used later on
tlr CORE_REG_A @ store in register A as input for ALU
ts "\n" @ store newline in TMP
tlr CORE_REG_B @ store newline in register B as input for ALU
ts CORE_ALU_EQ @ ALU equal operation
alu @ run ALU
@ go back to loop start if pressed key is newline
tlr CORE_REG_A @ store result of ALU operation in TMP
@ ts loop @ load memory address of loop start into TMP
ts 0
tls
ts jump_switch
tls
ts end_input
tlrc CORE_REG_PC @ set register PC to loop start address if result is true
pop
tlr CORE_REG_A
ts 0
tlrc CORE_REG_C
@ print out char
tsr CORE_REG_D @ get char
tlr CORE_REG_A @ load char into register A
ts CORE_MEM_CHR @ set TMP to char print memory address
set @ print char
@ increment counter by one
tsr CORE_REG_C
tlr CORE_REG_A
ts 1
tlr CORE_REG_B
ts CORE_ALU_ADD
alu
tlr CORE_REG_C
tlr CORE_REG_A
ts FORTH_MEM_INPUT_SIZE
tlr CORE_REG_B
ts CORE_ALU_LT
alu
tlr CORE_REG_A
ts loop
tlrc CORE_REG_PC
ts "\n"
tlr CORE_REG_A
ts CORE_MEM_CHR
set
tsr CORE_REG_C
tls
dbg
pop
ts 0
tlr CORE_REG_C
ts loop
tlr CORE_REG_PC
@ .std_stop
@ set PC to maximum for u16 and therefore stops program execution
ts 0xffff @ load 0xffff into TMP
tlr CORE_REG_PC @ store value of TMP into register PC
jump_switch:
dbg
.org jump_main
ts main
tlr CORE_REG_PC