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annotate level2/modules/kernel/freboot.asm @ 1145:ca83286ded5b

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Start of new OS-9 L2 Kernel
author boisy
date Tue, 22 Apr 2003 19:35:48 +0000
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ca83286ded5b Start of new OS-9 L2 Kernel
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1 ******************************************************
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2 * F$ReBoot entry point
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3 * Currently disabled (doesn't work)
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4 * Besides, there's no need for this code to be in system memory.
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5 * A user-mode program can do this just as well.
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6 *
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7 * Entry A = 0 Cold ReBoot
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8 * = 1 Quit to RSDOS
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9 *
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10 *ReBoot equ *
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11 * orcc #Carry Set error flag
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12 * rts Exit
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13 * tst R$A,u Cold start (a=0)
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14 * bne WarmBt no, attempt a warm boot
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15 *WarmBt orcc #IntMasks
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16 * ldb #CodeSize
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17 * leax BootCode,pc
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18 * tfr 0,y
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19 *BootLoop lda ,x+
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20 * sta ,y+
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21 * decb
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22 * bne BootLoop
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23 * jmp >$0000
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24 *BootCode equ *
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25 * lda >$ffa8
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26 * sta >$ffa0
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27 * clra
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28 * sta >$ff90
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29 * sta >$ff91
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30 * jmp >$ed5f
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31 *CodeSize equ *-BootCode
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