Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision | ||
|
system_routines:upi [2016/06/01 15:58] ex_writer |
system_routines:upi [2016/06/05 16:17] (current) ex_writer [User Program Interface] |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| ====== User Program Interface ====== | ====== User Program Interface ====== | ||
| - | The User Program Interface (UPI) is a set of procedures and conventions used by a cartridge program to access the facilities provided by the Bally Arcade's [[:system rom|operating system]]. | + | The User Program Interface (UPI) is a set of procedures and conventions used by a cartridge program to access the facilities provided by the Bally Arcade's [[software:system ROM]]. |
| - | For details on the UPI's usage, see [[:UPI Conventions]]. | + | For details on UPI usage, see [[software:UPI Conventions]]. |
| ===== UPI System Routines ===== | ===== UPI System Routines ===== | ||
| Line 134: | Line 134: | ||
| | Arguments: | B = Argument load mask | | | Arguments: | B = Argument load mask | | ||
| | Output: | HL = Updated Program Counter | | | Output: | HL = Updated Program Counter | | ||
| - | | Notes: | Definition from source listing p. 21 | | ||
| | Description: | This routine implements a macro load instruction. It is used by the interpreter as well. A one bit in the inline load mask means 'transfer the next inline byte in'; a zero bit means 'advance context block pointer.'\\ \\ The number of arguments following the mask in SYSSUK depends upon the value in mask. | | | Description: | This routine implements a macro load instruction. It is used by the interpreter as well. A one bit in the inline load mask means 'transfer the next inline byte in'; a zero bit means 'advance context block pointer.'\\ \\ The number of arguments following the mask in SYSSUK depends upon the value in mask. | | ||
