forked from MirrorRepos/RomWBW
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25 lines
1.1 KiB
25 lines
1.1 KiB
ZZRCC Disk Prefix Layout
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========================
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---- Bytes ---- --- Sectors ---
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Start Length Start Length Description
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------- ------- ------- ------- ---------------------------
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0x00000 0x001BE 0 1 CF Boot Loader
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0x001B8 0x00048 RomWBW Partition Table
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0x00200 0x1EE00 1 247 Unused
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0x1F000 0x01000 248 8 ZZRCC Monitor v0.5
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0x20000 0x04000 256 32 Unused
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0x24000 0x80000 288 1024 RomWBW
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0xA4000 0x5C000 1312 736 Unused
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0x100000 2048 Start of slices (partition 0x1E)
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Notes
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-----
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- At startup CPLD ROM is mapped to Z280 CPU address space 0x0000-0x003F, CPU begins execution at 0x0000
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- CPLD ROM (CF bootstrap mode) reads CF Boot Loader (512B) from start of CF (MBR) to 0xB000 and runs it
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- CF Boot Loader reads ZZRCC Monitor (4KB) from sectors 0xF8-0xFF of CF to 0xB400 and runs it
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- ZZRCC Monitor reads 512KB (RomWBW) from sectors 0x120-0x51F of CF into first 512KB of physical RAM
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- ZZRCC Monitor maps first 32KB of physical RAM to first 32KB of CPU RAM and starts execution at 0x0000
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-WBW 3:30 PM 10/12/2023
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