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51 lines
1.2 KiB
Plaintext
51 lines
1.2 KiB
Plaintext
NEW
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AUTO 3,1
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* object code = ram_1
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*
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* /RAM installer - transfer part of the driver to the aux bank
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* and front part of the driver to the main bank (language card).
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RAM_1 .BS $2C80-*
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H2C80 ldy #$99 move $9A bytesfrom lcsrc to lcdest.
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.1 lda lcsrc,y transfer main bank portion of driver
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sta lcdest,y
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dey
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cpy #$FF
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bne .1
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ldx #ramsrc set up to move aux portion of driver
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stx A1L
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dex
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stx A2L
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ldx /ramsrc
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stx A1L+1
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inx
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stx A2L+1
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lda #ramdest
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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
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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 $2D00-* pad 0's to page boundary
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*--------------------------------------
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MAN
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SAVE USR/SRC/PRODOS.203/PRODOS.S.RAMI
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LOAD USR/SRC/PRODOS.203/PRODOS.S
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ASM
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