The PrintCash (Bank 0) subroutine - Elite on the BBC Micro and NES

       Name: PrintCash                                               [Show more]
       Type: Subroutine
   Category: Market
    Summary: Print our cash levels in the correct place for the chosen language
    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * BuyAndSellCargo calls PrintCash


.PrintCash

 LDA #%10000000         ; Set bit 7 of QQ17 to switch standard tokens to
 STA QQ17               ; Sentence Case

 LDX languageIndex      ; Move the text cursor to the correct row for the chosen
 LDA yCash,X            ; language, as given in the yCash table
 STA YC

 LDA xCash,X            ; Move the text cursor to the correct column for the
 STA XC                 ; chosen, as given in the xCash table

 JMP PCASH              ; Jump to PCASH to print recursive token 119
                        ; ("CASH:{cash} CR{crlf}"), followed by a space, and
                        ; return from the subroutine using a tail call

[X]

Entry point PCASH in subroutine fwl (category: Status)

Print the amount of cash only

[X]

Variable QQ17 in workspace ZP

Contains a number of flags that affect how text tokens are printed, particularly capitalisation

[X]

Variable XC in workspace ZP

The x-coordinate of the text cursor (i.e. the text column), which can be from 0 to 32

[X]

Variable YC in workspace ZP

The y-coordinate of the text cursor (i.e. the text row), which can be from 0 to 23

[X]

Variable languageIndex in workspace WP

The language that was chosen on the Start screen as an index into the various lookup tables

[X]

Variable xCash (category: Market)

The text column for our cash levels on the Market Price page

[X]

Variable yCash (category: Market)

The text row for the cash levels on the Market Price page

Market: PrintCash

[NES version, Bank 0]