77 lines
1.4 KiB
C
77 lines
1.4 KiB
C
//---
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//
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// gint core module: mpu
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//
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// Determines which kind of MPU is running the program. This module
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// provides macro tests isSH3(), isSH4(), and the identifier of the MPU,
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// which is stored in a global variable MPU_CURRENT.
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//
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// If you need to do MPU-dependant jobs, prefer the following alternative:
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//
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// if(isSH3())
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// {
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// ...
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// }
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// else
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// {
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// ...
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// }
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//
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//---
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#ifndef _MPU_H
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#define _MPU_H 1
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/*
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enum MPU
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This type holds information about the calculator's MPU.
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*/
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enum MPU
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{
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MPU_Unknown = 0,
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// fx-9860G SH3.
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MPU_SH7337 = 1,
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// fx-9860G II SH3.
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MPU_SH7355 = 2,
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// fx-9860G II SH4.
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MPU_SH7305 = 3,
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// Just for reference.
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MPU_SH7724 = 4
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};
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// Global MPU variable, accessible for direct tests. Initialized at the
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// beginning of execution.
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extern enum MPU MPU_CURRENT;
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// Quick SH3 test. It is safer to assume that an unknown model is SH4 because
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// SH3-based models are not produced anymore.
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#define isSH3() (MPU_CURRENT == MPU_SH7337 || MPU_CURRENT == MPU_SH7355)
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#define isSH4() !isSH3()
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//---
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// Public API.
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//---
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/*
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getMPU()
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Determines the MPU type and returns it. MPU_CURRENT is not updated.
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*/
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enum MPU getMPU(void);
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//---
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// Internal API.
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// Referenced here for documentation purposes only. Do not call.
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//---
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/*
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mpu_init()
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Determines the MPU type and stores the result into MPU_CURRENT.
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*/
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void mpu_init(void) __attribute__((constructor));
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#endif // _MPU_H
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