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2163
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1 NAM bootman
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2 TTL Boot Manager
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3
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4 BOOTTRACK equ 0
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5
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2191
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6
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7 PSECT bootman,$11,$80,0,0,entry
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2163
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8
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9 VSECT
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10 ENDSECT
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11
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12 TOP EQU $FE00
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13
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14 * The entry point of the boot manager
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15 * Entry: stack is set up, U points to static storage
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16 csect
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17 sectptr rmb 2
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18 endsect
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19
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2191
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20 entry lbsr mach_init initialize the machine we're running on
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21 leas entry,pcr set up stack
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22 leau entry-256,pcr set up static storage
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23 leax entry-512,pcr set up sector buffer pointer
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2163
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24 stx sectptr,u
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25 leax welcome,pcr
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26 bsr writestr
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2191
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27
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28 * start booter calling
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29 bootup
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30 leax cfg_boot,pcr
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31 ldy ,x get address of booter
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32 beq bootup if 0, try again
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33
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34 * call booter's get info entry
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35 leax attempt,pcr
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36 bsr writestr
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37 jsr 12,y
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38 bsr writestr
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39 leax crlf,pcr
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40 bsr writestr
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41
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2163
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42 loop bra loop
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43
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44
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2191
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45 attempt fcc "Attempting to boot from "
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46 fcb 0
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2163
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47 welcome fcc "NitrOS-9 Boot Manager"
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2191
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48 crlf fcb 13,10
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2163
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49 fcb 0
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50
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51 * Helpful routines
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52
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53 * writestr - write string to output handler
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54 * Entry:
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55 * X = address of string (nul terminated)
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2233
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56 * Preserves:
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57 * Y
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2163
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58 writestr:
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2233
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59 pshs y
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2163
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60 leay llio,pcr
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61 writeloop
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62 lda ,x+
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63 beq writedone
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64 jsr 3,y
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65 bra writeloop
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66 writedone
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2233
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67 puls y,pc
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2163
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68
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69 endsect
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