A2osX/ProDOS.203/ProDOS.S.RAMI.txt

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NEW
AUTO 3,1
* object code = ram_1
*
* /RAM installer - transfer part of the driver to the aux bank
* and front part of the driver to the main bank (language card).
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RAM_1 .BS $2C80-*
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ldy #$99 move $9A bytesfrom lcsrc to lcdest.
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.1 lda lcsrc,y transfer main bank portion of driver
sta lcdest,y
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dey
cpy #$FF
bne .1
ldx #ramsrc set up to move aux portion of driver
stx A1L
dex
stx A2L
ldx ramsrc
stx A1L+1
inx
stx A2L+1
lda #ramdest
sta A4L
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lda /ramdest ramsrc to ramdest
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sta A4L+1
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sec irection = to aux bank.
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jsr auxmove move aux bank portion of driver.
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lda #lcdest put driver address into
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sta drivertbl2+6 slot 3, drive 2.
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lda /lcdest
sta drivertbl2+7
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inc numdevs count (-1) active devices
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ldx numdevs
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lda #$BF unit num of /RAM
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sta devlist,x
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rts end of obj ram_1
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RAM_1_END .EQ * end of /RAM installer
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.BS 256-* pad 0's to page boundary
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*--------------------------------------
MAN
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SAVE USR/SRC/PRODOS.203/PRODOS.S.RAMI
LOAD USR/SRC/PRODOS.203/PRODOS.S
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ASM