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What is the difference between the Small, Large and Huge memory models?

April 26, 2017difference huge large memory models small

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What is the difference between the Small, Large and Huge memory models?

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The memory model defines how data memory is accessed. Small Memory Model: (rts55.lib) 16 bit data address is used for data access. Large Memory Model: (rts55x.lib) 23-bit data address is used, but there is memory boundary limitation. The offset address should be within 64K. If offset address goes over 64K, it will be wrapped around. Huge Memory Model: (rts55h.lib) 23-bit data address without the 64K boundary limit. For v3.x CPU only.