💾 Archived View for mirrors.apple2.org.za › archive › apple.cabi.net › Z80.CPM › A2.CPM.files › IOLO… captured on 2023-03-20 at 23:39:44.
⬅️ Previous capture (2023-01-29)
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APLVIDEX.ASM -purpose to speed up console output for Apple ][ using the Videx 80-column card. -issue 1.0 14 June 1983 -Bill McGee (613-828-9130) The program IOLOAD will load a new driver for the videx 80-column card into the text space unused when the 80-column card is installed. Unfortunately, this doesn't leave room for the two ZCPR2 areas IOBASE or NDBASE. However, I did leave room for the STKBASE, the CLBASE, and for EXTFCB. This still leaves the Apple screen pretty slow. Response times for writing 16k characters to the screen are old BIOS 19 s this BIOS 11 s. The test is IOTEST.COM. As may be seen from the source, the same SOFTWARE controls as assumed for the Softcard are assumed. These may be changed by modifying the source. This patch renders the IOBYTE for the console inoperative. The patch won't work for Apple 2E!!! For CPM60 use IOLOAD60. The source for APLVIDEX gives the relevant equate. Getting there!