3 Commits

Author	SHA1	Message	Date
Virgil Dupras	57fd14b0b3	sms: fix cursor mis-display in text mode ... In CURSOR!, I was using a write commande to read from VRAM and the emulator didn't properly behave and did as if everything was fine. The result on a real SMS was that the cursor would contain the inverted glyph of the contents of the *old* cursor position.	2020-11-16 13:10:04 -05:00
Virgil Dupras	d1718a90c7	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.	2020-11-13 12:18:00 -05:00
Virgil Dupras	09c01c4a43	emul/z80: extract tms9918 unit from sms_vdp ... I'm planning on supporting Text Mode soon, and SMS' VDP, when mode 4 is not active, behaves mostly like a regular TMS9918. By having this behavior in a separate unit, we'll be able to use it in other systems.	2020-11-12 11:13:18 -05:00