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collapseos/arch/z80/sms/xcomptextmode.fs

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sms: add support for VDP's text mode Because that mode behaves exactly like in a regular TMS9918, a new driver for TMS9918 has been added in blkfs and SMS' VDP now uses it. Also, fix broken 5x7 font.
2020-11-14 04:15:20 +11:00
( xcomp using the Text Mode if the VDP. Only works on actual
SMS. The Megadrive's VDP doesn't have TMS9918 modes in it. )
( 8K of onboard RAM )
0xdd00 CONSTANT RS_ADDR
( Memory register at the end of RAM. Must not overwrite )
0xddca CONSTANT PS_ADDR
RS_ADDR 0x80 - CONSTANT SYSVARS
0xc000 CONSTANT HERESTART
0xbf CONSTANT TMS_CTLPORT
0xbe CONSTANT TMS_DATAPORT
SYSVARS 0x70 + CONSTANT GRID_MEM
grid: add XYMODE In VE on the SMS, the first contents line would always be cleared because of NEWLN being called when the FBUF would spit its last char. Inconvenient... I've added a "graphical" mode to the grid subsystem to inhibit this behavior in a graphical situation such as in VE. Also, write a more complete Grid documentation.
2020-11-15 14:35:08 +11:00
SYSVARS 0x73 + CONSTANT CPORT_MEM
sms: add support for VDP's text mode Because that mode behaves exactly like in a regular TMS9918, a new driver for TMS9918 has been added in blkfs and SMS' VDP now uses it. Also, fix broken 5x7 font.
2020-11-14 04:15:20 +11:00
0x3f CONSTANT CPORT_CTL
0xdc CONSTANT CPORT_D1
0xdd CONSTANT CPORT_D2
grid: add XYMODE In VE on the SMS, the first contents line would always be cleared because of NEWLN being called when the FBUF would spit its last char. Inconvenient... I've added a "graphical" mode to the grid subsystem to inhibit this behavior in a graphical situation such as in VE. Also, write a more complete Grid documentation.
2020-11-15 14:35:08 +11:00
SYSVARS 0x74 + CONSTANT PS2_MEM
sms: add support for VDP's text mode Because that mode behaves exactly like in a regular TMS9918, a new driver for TMS9918 has been added in blkfs and SMS' VDP now uses it. Also, fix broken 5x7 font.
2020-11-14 04:15:20 +11:00
5 LOAD ( z80 assembler )
262 LOAD ( xcomp )
523 LOAD ( font compiler )
sms: generate TMR SEGA signature in Collapse OS itself Having the signature generation code in /tools prevents self-hosting on the SMS.
2020-11-26 13:42:07 +11:00
165 LOAD ( Sega ROM signer )
sms: add support for VDP's text mode Because that mode behaves exactly like in a regular TMS9918, a new driver for TMS9918 has been added in blkfs and SMS' VDP now uses it. Also, fix broken 5x7 font.
2020-11-14 04:15:20 +11:00
282 LOAD ( boot.z80.decl )
270 LOAD ( xcomp overrides )
Have FILL use indirect memory access This allows SMS xcomp to use ALLOT0 instead of ZFILL,
2020-12-08 11:17:51 +11:00
DI, 0x100 JP, 0x62 ALLOT0 ( 0x66 )
RETN, 0x98 ALLOT0 ( 0x100 )
sms: add support for VDP's text mode Because that mode behaves exactly like in a regular TMS9918, a new driver for TMS9918 has been added in blkfs and SMS' VDP now uses it. Also, fix broken 5x7 font.
2020-11-14 04:15:20 +11:00
( All set, carry on! )
CURRENT @ XCURRENT !
0x100 BIN( !
283 335 LOADR ( boot.z80 )
353 LOAD ( xcomp core low )
CREATE ~FNT CPFNT5x7
sms: add cursor indicator to text mode I do this by adding an inverted version of all glyphs in the upper range of the pattern memory. This is a big waste of the pattern space (only one inverted character is needed at once), but it's the simplest way to proceed. I'll change this if I ever need more pattern space. Also, remove _blank. It was wastefully blanking the whole memory. Only the name table needs to be blanked on initialization.
2020-11-17 03:11:30 +11:00
470 472 LOADR ( TMS9918 )
sms: add support for VDP's text mode Because that mode behaves exactly like in a regular TMS9918, a new driver for TMS9918 has been added in blkfs and SMS' VDP now uses it. Also, fix broken 5x7 font.
2020-11-14 04:15:20 +11:00
402 404 LOADR ( Grid )
625 626 LOADR ( SMS ports )
620 LOAD ( PAD ) : (ps2kc) (ps2kcA) ; 411 414 LOADR
grid: add XYMODE In VE on the SMS, the first contents line would always be cleared because of NEWLN being called when the FBUF would spit its last char. Inconvenient... I've added a "graphical" mode to the grid subsystem to inhibit this behavior in a graphical situation such as in VE. Also, write a more complete Grid documentation.
2020-11-15 14:35:08 +11:00
622 LOAD ( SPI )
1 CONSTANT SDC_DEVID 423 436 LOADR ( SDC )
sms: add support for VDP's text mode Because that mode behaves exactly like in a regular TMS9918, a new driver for TMS9918 has been added in blkfs and SMS' VDP now uses it. Also, fix broken 5x7 font.
2020-11-14 04:15:20 +11:00
390 LOAD ( xcomp core high )
(entry) _
( Update LATEST )
PC ORG @ 8 + !
grid: add XYMODE In VE on the SMS, the first contents line would always be cleared because of NEWLN being called when the FBUF would spit its last char. Inconvenient... I've added a "graphical" mode to the grid subsystem to inhibit this behavior in a graphical situation such as in VE. Also, write a more complete Grid documentation.
2020-11-15 14:35:08 +11:00
," TMS$ GRID$ PS2$ BLK$ ' SDC@ BLK@* ! (im1) " EOT,
Add words |M and |L Splitting a word into MSB/LSB pairs happens often and is worth, I think, native words. Also, I'm going to need it in the upcoming commits.
2020-12-08 12:08:45 +11:00
ORG @ 0x100 - DUP |M 2 PC! 2 PC!
sms: generate TMR SEGA signature in Collapse OS itself Having the signature generation code in /tools prevents self-hosting on the SMS.
2020-11-26 13:42:07 +11:00
DUP 1 ( 16K ) segasig
Add words |M and |L Splitting a word into MSB/LSB pairs happens often and is worth, I think, native words. Also, I'm going to need it in the upcoming commits.
2020-12-08 12:08:45 +11:00
0x4000 + |M 2 PC! 2 PC!
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