mirror of https://github.com/stid/woz64.git
87 lines
2.4 KiB
NASM
87 lines
2.4 KiB
NASM
.filenamespace MemMap
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#importonce
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.const SHELL_BUFFER_ADDR = $1000 // 256 bytes (3000-30FF)
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.const XSTACK_ADDRESS = $1100 // 256 bytes (3100-31FF)
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.const YSTACK_ADDRESS = $1200 // 256 bytes (3200-32FF)
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.const KEYB_RAM_CODE = $1300 // Safe to use > $1400
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*=$2 "ZERO PAGE" virtual
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.namespace CORE {
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// PHx/PLx pseudo commands
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tmpA: .byte 0 // TMP A
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}
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.namespace PRINT {
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TempStringPointer: .word 0 // Pointer to string address as it get printend to screen
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}
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.namespace VIDEO {
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TempVideoPointer: .word 0 // Pointer to video mem used to target char pos
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CursorCol: .byte 0 // Actual cursor column position
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CursorRow: .byte 0 // Actual cursor row position
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StatusBitsA: .byte 0 // Status Bits
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// Bit0: ScrollUpTriggred if ON
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}
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.namespace MATH {
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factor1: .byte 0 // Factor 1 used in MUL ops
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factor2: .byte 0 // Factor 2 used in MUL ops
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result: .word 0 // 16 Bit math operation result
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}
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.namespace KEYBOARD {
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KeyR: .byte 0
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SYS_Keyd: .fill $10,0
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SYS_Ndx: .byte 0
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SYS_Xmax: .byte 0
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SYS_Shflag: .byte 0
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SYS_Sfdx: .byte 0
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SYS_Lstx: .byte 0
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SYS_Delay: .byte 0
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SYS_Kount: .byte 0
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SYS_Lstshf: .byte 0
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.label keybRamCode = KEYB_RAM_CODE
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}
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.namespace MEMORY {
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from: .word 0
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dest: .word 0
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size: .word 0
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}
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.namespace TIMERS {
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counter: .byte 0 // Factor 1 used in MUL ops
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}
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.namespace MODULE {
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versionPtr: .word 0
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}
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.namespace SHELL {
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pos: .byte 0
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MODE: .byte 0
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L: .byte 0
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H: .byte 0
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YSAV: .byte 0
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STL: .byte 0
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STH: .byte 0
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XAML: .byte 0
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XAMH: .byte 0
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.label buffer = SHELL_BUFFER_ADDR // 256 bytes
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}
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.namespace STID_SHELL {
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pos: .byte 0
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mode: .byte 0
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sAddr: .word 0
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eAddr: .word 0
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.label buffer = SHELL_BUFFER_ADDR // 256 bytes
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}
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